Licenses & terms

The terms each edition is sold under, the platform and creator terms, our privacy policy, the open-source font the product bundles, and the browser client's dependency notices.

Personal edition license

DatumHue Personal End-User License

Version 1.6 — 2026-08-01

This license covers the DatumHue Personal bundle: the datumhue binary and the manual.html document distributed together in this archive. Two license grants apply, one per component; the preamble and disclaimers at the end of this file apply to all three.

Scope. This is the DatumHue Personal End-User license — sold as the Personal edition — the paid, offline desktop edition for one person, with no redistribution rights. It is distinct from the Indie edition (which adds runtime redistribution), the free networked client, and the separate enterprise agreement. Distribution of the Personal bundle under any other edition requires a separate license. A free, time-limited trial of this edition is available; §1g states how these terms apply during a trial.

0. Acceptance

You accept this license by clicking "Accept" in the click-through dialog presented at first launch of the binary. The full text of this license is embedded in the binary and shown in that dialog; an identical copy travels in the bundle as LICENSE.md for offline reference. If you do not accept the terms, click "Decline" — the binary will exit. Refunds are governed by §5.

Running the binary additionally requires the license file issued to you at purchase (or, for a trial, on your trial request). The binary verifies it locally on every launch — entirely offline; nothing is transmitted anywhere — and the file encodes the terms of §1a and §1b below: who the license was issued to, which edition it covers, and the update window (or trial period) it entitles.

1. The binary (`datumhue` executable)

The datumhue executable, its embedded shaders, and every other compiled artifact bundled alongside it are proprietary software, licensed and not sold. On receipt of the bundle from an authorized distribution channel (a purchase from Shuusei AB's official store page or a direct order placed with Shuusei AB), Shuusei AB ("we", "us"), the Swedish company publishing DatumHue, grants you ("the licensee") a perpetual, worldwide, non-exclusive, non-transferable license to use the binary subject to the terms below.

1a. Grant — who may use the binary

You may install and run the binary on any number of devices that you personally own or control, for any purpose — personal, hobbyist, educational, or commercial, at any scale of revenue. One purchase covers one person.

Use by a team or organization is permitted only if five (5) or fewer individual contributors use the binary, counted across all purposes and devices.

A team or organization with more than five contributors must obtain a separate commercial license from Shuusei AB. Contact us to arrange one — we don't expect to be unreasonable about it, but the personal-tier price does not include enterprise seat counts or organization-wide deployment, and the enterprise contract is where that use belongs.

The license is non-transferable: you may not sell, lend, lease, rent, or gift your copy of the binary to another person, and your license cannot be reassigned when the device it runs on changes hands.

1b. Updates — the update-window compact

Your license is perpetual on the releases it covers: every release of the DatumHue Personal bundle published within your update window is yours to use forever, on the terms of this license. The update window runs five (5) years from your purchase date (both dates are encoded in your license file), and you may extend it at any time by purchasing a new window — each purchase starts a fresh five-year window from its own purchase date.

A release published after your update window ends is not covered: the binary checks its own release date against your license at launch and will tell you, rather than silently degrade, when a newer release needs a renewed window. Nothing is taken away — every release from inside your window keeps working, offline, indefinitely.

The window is also the product's security-support period. Security fixes ship as ordinary releases inside it, free of charge — a release fixing a security vulnerability is covered exactly like any other release published within your window, and the five-year window meets or exceeds the support period applicable law requires.

Shuusei AB does not guarantee stability of the DatumHue API surface between releases: releases inside your window may:

Remove, rename, or re-signature Lua API calls;
Change default capability gates;
Require you to edit your scripts to keep running.

Update notes for every release call out breaking changes clearly so you can decide when to migrate.

1c. Permitted uses

You may:

Use the binary to run local Lua scripts of your own authorship, or scripts you are otherwise legally entitled to run.
Make a reasonable number of copies of the bundle for backup, disaster recovery, and personal archival. Every copy must retain this license file intact.
Use the binary to develop commercial products whose output is your own scripts, data, or media — Shuusei AB claims no ownership or royalty in anything you author with it. See §1e.

1d. Reserved rights — what is not granted

All rights not expressly granted in §1a–§1c are reserved. In particular, you may not:

Reverse engineer, decompile, or disassemble the binary, except to the minimum extent expressly permitted by non-waivable provisions of applicable law (e.g. Article 6 of the EU Software Directive for interoperability with independently-created software).
Extract, repackage, or redistribute the binary's compiled code, embedded shaders, fonts, or other non-source assets as part of another product, library, asset pack, or toolkit.

You are free to sell, license, or otherwise distribute Lua apps, games, tools, assets, and data that you authored with DatumHue — your work remains entirely yours (see §1e). The restriction is specifically on shipping the DatumHue runtime alongside your product. Each end user who wishes to run your Lua app must obtain their own legitimately-licensed copy of DatumHue Personal (or another DatumHue client) from an authorized Shuusei AB distribution channel. You may not bundle the binary with your app, host the binary for download as part of your distribution, or instruct your customers to obtain the binary from any source other than Shuusei AB's authorized channels.

The recommended distribution path for commercial Lua apps is the public DatumHue package registry at datumhue.app, which end users reach through any DatumHue client and which handles the runtime-licensing question for you automatically.
Rebrand the binary, distribute it under a different name, or present it as a competing engine, runtime, or development tool.
Impersonate Shuusei AB or DatumHue — you may not use the Shuusei AB or DatumHue names, logos, or branding elements to endorse or identify your own products without written permission. Factual "made with DatumHue" credits in games, articles, videos, and tutorials are welcome and do not require permission.
Circumvent or remove any capability gates, sandboxing mechanisms, runtime safeguards, or license verification in the binary.
Redistribute the bundle to third parties in any form. Each user must obtain their own license. If your product needs to ship a DatumHue runtime to its end users, that is exactly what the Indie edition licenses — it covers redistributing a runtime-only binary together with your packaged scripts. Contact Shuusei AB or see the published edition comparison.
Operate the binary as a hosted or managed service — you may not offer DatumHue itself (or any service whose substantial value is multi-user or multi-tenant access to a running DatumHue instance) to third parties over a network, whether free or paid. Running the binary on your own remote machine for your own use is not a hosted service. Multi-user and organization-wide deployments are covered under a separate enterprise agreement — contact license@datumhue.com.
Use the bundle to build a competing offering — you may not use the binary, its documentation, or observation of its behavior to develop, train, or improve a product or service that competes with DatumHue as a creative workstation, engine, or runtime. This restricts using our work against us; it does not restrict you from building anything else, including tools in the same broad market that you build independently. It also does not limit any act permitted by non-waivable provisions of applicable law, including observing, studying, or testing the functioning of the program under Article 5(3) of the EU Software Directive.

1e. Your scripts and your data

The Lua scripts you write, the assets your scripts load or produce, and any files your scripts create on your filesystem are entirely yours. Shuusei AB claims no ownership in, and takes no license to, any of that content. The Personal build makes no network connection: not to run, not to verify your license (verification is entirely local), and not to send telemetry. Nothing you make with this binary is transmitted to, stored by, or observable by Shuusei AB.

1f. Termination

Your license terminates automatically and without notice if you materially breach §1d. On termination you must immediately stop using the binary and destroy every copy in your possession. Termination of your license does not affect any third party who legitimately received their own copy from the original distributor under their own license.

1g. Trial licenses

A trial license is a license file Shuusei AB issues free of charge that unlocks the binary for a limited period. The end of the period is encoded in the trial license file, shown in the application while the trial runs, and verified at every launch — offline, like any other license file.

While your trial license is valid, the grant of §1a and every other term of this license apply to you in full, with these differences:

Time limit. Once the trial period has passed, the binary no longer starts under the trial license. Nothing is deleted: the scripts, assets, and data you made are yours (§1e) and stay on your machine.
No update window. §1b does not apply to a trial. Releases published while your trial is valid run under it; the trial license grants no entitlement beyond its period.
One trial per person. Shuusei AB issues one trial per person. Obtaining additional trial licenses through other email addresses or identities is a material breach of this license (§1f).
Free of charge. A trial license is not a purchase; §5 (refunds) does not apply to it. The warranty disclaimer (§4) and the liability cap (§8) apply to trial use exactly as to purchased use.

To keep using the binary after the trial, purchase a license from an authorized Shuusei AB distribution channel and install the purchased license file in place of the trial file — everything you made during the trial carries straight over.

2. The manual (`manual.html`)

The DatumHue Personal manual is © Shuusei AB. You may:

Read it, search it, print it for personal use, and share excerpts as part of reviews, tutorials, blog posts, forum answers, course materials, videos, and other commentary, with attribution to DatumHue.
Quote it freely in your own documentation, training materials, and derivative writing — statutory quotation rights apply, and we explicitly do not want to prevent reasonable quoting.

You may not:

Republish the manual verbatim (in whole or in substantial part) as your own document, paid product, or derivative work without written permission. Linking to the original, or redistributing the unmodified file as part of an official DatumHue Personal bundle, is fine.
Use the manual text to train a publicly-offered machine-learning model whose outputs are sold, licensed, or delivered as a commercial service. Private, personal ML experimentation on your own copy is not restricted.

3. Warranty disclaimer

The bundle is provided "AS IS", without warranty of any kind, express or implied, including but not limited to the implied warranties of merchantability, fitness for a particular purpose, title, and non-infringement. We do not warrant that the binary will be uninterrupted, error-free, secure, or suitable for your use case.

To the maximum extent permitted by applicable law, Shuusei AB and its contributors are not liable for any direct, indirect, incidental, special, consequential, or exemplary damages arising out of your use of the bundle — including loss of data, loss of revenue, business interruption, or any other commercial damages or losses — even if advised of the possibility of such damages. Some jurisdictions do not allow these limitations; in those jurisdictions the disclaimer applies to the fullest extent permitted.

Nothing in this section attempts to waive any mandatory consumer-protection warranty or remedy that cannot be waived under your local law, including any non-waivable rights you have under the Swedish Konsumentköplagen (2022:260) or equivalent consumer protection legislation in your jurisdiction of residence. Nothing in this license excludes or limits Shuusei AB's liability for death or personal injury caused by its negligence, or for damage caused by its gross negligence or wilful misconduct.

4. Refunds

When you buy a license directly from Shuusei AB (for example through the datumhue.com checkout), the license is delivered to you immediately. At checkout you expressly request immediate delivery and acknowledge that, once the license has been delivered, you lose the statutory 14-day right of withdrawal that would otherwise apply to a distance purchase. A delivered license is therefore non-refundable as a change-of-mind return — there is nothing to return, and the license is not revoked except on the limited termination grounds in §1f.

This does not affect your statutory remedies if the bundle is defective or not as described. Nothing in this section limits any mandatory refund, repair, replacement, price reduction, or other consumer-protection remedy that the law of your country of residence gives you and that cannot be waived (see §4), including under the Swedish Konsumentköplagen (2022:260).

Where you obtained the bundle through a third-party distribution channel instead, that channel's own refund policy governs and any refund must be requested through it; Shuusei AB does not control and cannot override another channel's policy.

5. Third-party components

The binary links against open-source libraries that carry their own licenses. A complete list of every included component, its version, and its license text is distributed in this bundle as THIRD-PARTY-LICENSES.txt. Those components are governed by their own license terms and are not affected by this document.

6. Changes to this license

Future releases of DatumHue Personal may ship under an updated version of this license. The version you received is identified by the Version line at the top of this file, and that version governs your use of the bundle you downloaded. You are never forced to accept a newer version in order to keep running an older bundle that was legitimately licensed to you.

8. General terms

Liability cap. To the extent any liability cannot be excluded under §4, Shuusei AB's total aggregate liability arising out of or in connection with this license is limited to the amount you paid for the bundle. This does not limit liability that cannot be limited by law, or any non-waivable consumer right (see §4).
Entire agreement. This license is the entire agreement between you and Shuusei AB regarding the bundle and supersedes any prior understanding about it.
Severability. If any provision is held unenforceable, the remaining provisions stay in effect and the unenforceable provision applies to the maximum extent permitted.
No waiver. Shuusei AB's failure to enforce a provision is not a waiver of its right to enforce it later.
Assignment. Shuusei AB may assign this license, for example in connection with a merger, acquisition, or sale of assets. Your license is non-transferable (§1a).
Export and sanctions. You must not use or export the binary in breach of applicable export-control or economic-sanctions law.
Capacity. You must be old enough to enter a binding contract where you live in order to accept this license.
Notices. Shuusei AB may send notices to the contact associated with your purchase; you can reach Shuusei AB at license@datumhue.com.
Survival. The warranty disclaimer, liability limits, reserved rights, and governing-law provisions survive termination.

9. Governing law and contact

This license is governed by and construed in accordance with the laws of Sweden, without regard to its conflict-of-laws principles. Any dispute arising out of or in connection with this license — including questions about its existence, validity, interpretation, or termination — is subject to the exclusive jurisdiction of the Swedish courts, with Gothenburg District Court (Göteborgs tingsrätt) as the court of first instance.

Nothing in this section deprives a consumer residing in the European Union or European Economic Area of the protection of mandatory consumer-protection law of their country of residence, including the right to bring proceedings in, or have proceedings brought against them in, the courts of that country.

Questions about permitted uses, redistribution, licensing exceptions, team-size upgrades, or commercial use beyond the §1a thresholds: license@datumhue.com.

Postal mail may be addressed to Shuusei AB (org. nr 559146-8292), Hällebergsgatan 36, 442 54 Ytterby, Sweden.

Indie edition license

DatumHue Indie License

Version 1.2 — 2026-08-01

This license covers the DatumHue Indie bundle: the datumhue workstation binary, the datumhue-runtime redistributable runtime binary, and the manual.html document distributed together in this archive. Three license grants apply, one per component; the preamble and disclaimers at the end of this file apply to all of them.

Scope. This is the Indie edition license. It is distinct from the Personal (Personal End-User) license (no redistribution rights), the free networked client, and the separate enterprise agreement. Distribution of the Indie bundle under any other edition requires a separate license.

0. Acceptance

You accept this license by clicking "Accept" in the click-through dialog presented at first launch of the workstation binary. The full text of this license is embedded in the binary and shown in that dialog; an identical copy travels in the bundle as LICENSE.md for offline reference. If you do not accept the terms, click "Decline" — the binary will exit. Refunds are governed by §6.

Running the workstation binary additionally requires the license file issued to you at purchase. The binary verifies it locally on every launch — entirely offline; nothing is transmitted anywhere — and the file encodes the terms of §1a and §1b below: who the license was sold to, that it is the indie edition, the update window it entitles, and the signing material behind your redistribution rights (§2).

1. The workstation binary (`datumhue` executable)

1a. Grant — who may use the workstation binary

You may install and run the workstation binary on any number of devices that you personally own or control, for any purpose — personal, hobbyist, educational, or commercial, at any scale of revenue. One purchase covers one person.

Use by a team or organization is permitted only if five (5) or fewer individual contributors use the workstation binary, counted across all purposes and devices. End users who only run a creation you distributed under §2 are not contributors and are never counted.

A team or organization with more than five contributors must obtain a separate commercial license from Shuusei AB. Contact us to arrange one — we don't expect to be unreasonable about it, but the indie-tier price does not include enterprise seat counts, and the enterprise contract is where that use belongs.

1b. Updates — the update-window compact

Your license is perpetual on the releases it covers: every release of the DatumHue Indie bundle published within your update window is yours to use forever, on the terms of this license. The update window runs five (5) years from your purchase date (both dates are encoded in your license file), and you may extend it at any time by purchasing a new window — each purchase starts a fresh five-year window from its own purchase date.

Shuusei AB does not guarantee stability of the DatumHue API surface between releases: releases inside your window may:

Remove, rename, or re-signature Lua API calls;
Change default capability gates;
Require you to edit your scripts to keep running.

Update notes for every release call out breaking changes clearly so you can decide when to migrate.

1c. Permitted uses

You may:

Use the workstation binary to create and run Lua apps, games, tools, assets, and data of your own authorship, or content you are otherwise legally entitled to use.
Make a reasonable number of copies of the bundle for backup, disaster recovery, and personal archival. Every copy must retain this license file intact.
Use the workstation binary to develop commercial products — Shuusei AB claims no ownership or royalty in anything you author with it. See §1e.

1d. Reserved rights — what is not granted

All rights not expressly granted in §1a–§1c and §2 are reserved. In particular, you may not:

Reverse engineer, decompile, or disassemble the binaries, except to the minimum extent expressly permitted by non-waivable provisions of applicable law (e.g. Article 6 of the EU Software Directive for interoperability with independently-created software).
Redistribute the workstation binary in any form, or extract and repackage its compiled code, embedded shaders, fonts, or other non-source assets as part of another product, library, asset pack, or toolkit. The redistribution rights of this license are scoped to the runtime binary and your bound packages — see §2.
Rebrand either binary, distribute one under a different name while presenting it as your own engine, or present DatumHue as a competing engine, runtime, or development tool. Shipping the runtime binary inside your creation's install directory under §2 is not rebranding.
Impersonate Shuusei AB or DatumHue — you may not use the Shuusei AB or DatumHue names, logos, or branding elements to endorse or identify your own products without written permission. Factual "made with DatumHue" credits in games, articles, videos, and tutorials are welcome and do not require permission.
Circumvent or remove any capability gates, sandboxing mechanisms, runtime safeguards, or license verification in the binaries — including the package binding that ties your shipped packages to your license.
Redistribute your license file (.dhlicense) or otherwise share the signing material it carries. The license file is the credential behind both your workstation entitlement and your package-signing key; treat it like a private key. (The .dhruntime binding file that pkg pack extracts from it is designed to be shipped — see §2.)
Operate either binary as a hosted or managed service — you may not offer DatumHue itself (or any service whose substantial value is multi-user or multi-tenant access to a running DatumHue instance) to third parties over a network, whether free or paid. Running a binary on your own remote machine for your own use is not a hosted service. Multi-user and organization-wide deployments are covered under a separate enterprise agreement — contact license@datumhue.com.
Use the bundle to build a competing offering — you may not use the binaries, their documentation, or observation of their behavior to develop, train, or improve a product or service that competes with DatumHue as a creative workstation, engine, or runtime. This restricts using our work against us; it does not restrict you from building anything else, including tools in the same broad market that you build independently. It also does not limit any act permitted by non-waivable provisions of applicable law, including observing, studying, or testing the functioning of the programs under Article 5(3) of the EU Software Directive.

1e. Your scripts and your data

The Lua scripts you write, the assets your scripts load or produce, and any files your scripts create on your filesystem are entirely yours. Shuusei AB claims no ownership in, and takes no license to, any of that content. Neither binary in this bundle makes a network connection: not to run, not to verify your license (verification is entirely local), and not to send telemetry. Nothing you make with this bundle is transmitted to, stored by, or observable by Shuusei AB.

1f. Termination

Your license terminates automatically and without notice if you materially breach §1d or §2. On termination you must immediately stop using the binaries and destroy every copy in your possession. Termination of your license does not affect any end user who legitimately received your creation under §2 before termination, and does not affect any third party who legitimately received their own copy of the bundle from the original distributor under their own license.

2. The runtime binary (`datumhue-runtime`) — redistribution grant

The datumhue-runtime executable is the redistributable counterpart of the workstation: it runs packages and carries no creation tools. This section is what distinguishes the Indie edition.

Throughout this license, your creation is an application, game, tool, asset pack, or other work you authored with the DatumHue workstation and distribute as your own product — the packaged Lua apps, assets, and data that the runtime binary exists to run. The references to "your creation" in §1b and §1d carry this meaning.

2a. What you may redistribute

You may redistribute, as part of a creation you authored, through any channel and on any terms (free or paid):

The runtime binary, unmodified;
The runtime binding file (.dhruntime) that datumhue pkg pack --bind-license extracts from your license file; and
Your bound packages — .dhpkg archives packed with --bind-license against your license.

The three travel together as part of your creation's distribution. Your end users need no DatumHue license to run your creation; your own terms govern it. The runtime starts only alongside your binding file and loads only packages bound to your license — it is not a general-purpose DatumHue player, and this license does not permit distributing it as one.

2b. Conditions

The runtime binary and binding file may only be distributed bundled with a creation of yours that they exist to run — not bare, not as a standalone download, and not as a runtime for third parties' packages.
You must retain Shuusei AB's copyright notices and the THIRD-PARTY-LICENSES.txt attribution file alongside the runtime binary in your distribution.
Your creation's own license terms apply to your creation; they cannot purport to grant your end users any rights in the runtime binary beyond running it as shipped with your creation.
Support for your creation is yours: Shuusei AB has no support obligation toward your end users.

2c. Updates

Each release of the Indie bundle inside your update window includes the matching runtime binary; you may ship whichever covered release of the runtime works best for your creation, and creations already shipped keep working for their users indefinitely — bindings do not expire.

3. The manual (`manual.html`)

The DatumHue manual is © Shuusei AB. You may:

Read it, search it, print it for personal use, and share excerpts as part of reviews, tutorials, blog posts, forum answers, course materials, videos, and other commentary, with attribution to DatumHue.
Quote it freely in your own documentation, training materials, and derivative writing — statutory quotation rights apply, and we explicitly do not want to prevent reasonable quoting.

You may not:

Republish the manual verbatim (in whole or in substantial part) as your own document, paid product, or derivative work without written permission. Linking to the original, or redistributing the unmodified file as part of an official DatumHue bundle, is fine.
Use the manual text to train a publicly-offered machine-learning model whose outputs are sold, licensed, or delivered as a commercial service. Private, personal ML experimentation on your own copy is not restricted.

4. Warranty disclaimer

The bundle is provided "AS IS", without warranty of any kind, express or implied, including but not limited to the implied warranties of merchantability, fitness for a particular purpose, title, and non-infringement. We do not warrant that the binaries will be uninterrupted, error-free, secure, or suitable for your use case.

To the maximum extent permitted by applicable law, Shuusei AB and its contributors are not liable for any direct, indirect, incidental, special, consequential, or exemplary damages arising out of your use of the bundle or your end users' use of your creations — including loss of data, loss of revenue, business interruption, or any other commercial damages or losses — even if advised of the possibility of such damages. Some jurisdictions do not allow these limitations; in those jurisdictions the disclaimer applies to the fullest extent permitted.

5. Refunds

This does not affect your statutory remedies if the bundle is defective or not as described. Nothing in this section limits any mandatory refund, repair, replacement, price reduction, or other consumer-protection remedy that the law of your country of residence gives you and that cannot be waived (see §5), including under the Swedish Konsumentköplagen (2022:260).

6. Third-party components

The binaries link against open-source libraries that carry their own licenses. A complete list of every included component, its version, and its license text is distributed in this bundle as THIRD-PARTY-LICENSES.txt. Those components are governed by their own license terms and are not affected by this document. Condition §2b.2 carries the attribution file into your distributions.

7. Changes to this license

Future releases of DatumHue Indie may ship under an updated version of this license. The version you received is identified by the Version line at the top of this file, and that version governs your use of the bundle you downloaded. You are never forced to accept a newer version in order to keep running an older bundle that was legitimately licensed to you.

8. General terms

Liability cap. To the extent any liability cannot be excluded under §5, Shuusei AB's total aggregate liability arising out of or in connection with this license is limited to the amount you paid for the bundle. This does not limit liability that cannot be limited by law, or any non-waivable consumer right (see §5).
Your creations. You will indemnify Shuusei AB against third-party claims arising from your creations or your distribution of them under §2, except to the extent caused by Shuusei AB.
Entire agreement. This license is the entire agreement between you and Shuusei AB regarding the bundle and supersedes any prior understanding about it.
Severability. If any provision is held unenforceable, the remaining provisions stay in effect and the unenforceable provision applies to the maximum extent permitted.
No waiver. Shuusei AB's failure to enforce a provision is not a waiver of its right to enforce it later.
Assignment. Shuusei AB may assign this license, for example in connection with a merger, acquisition, or sale of assets. Your license is non-transferable (§1a).
Export and sanctions. You must not use or export the binaries in breach of applicable export-control or economic-sanctions law.
Capacity. You must be old enough to enter a binding contract where you live in order to accept this license.
Notices. Shuusei AB may send notices to the contact associated with your purchase; you can reach Shuusei AB at license@datumhue.com.
Survival. The warranty disclaimer, liability limits, reserved rights, the §2 conditions, and governing-law provisions survive termination.

10. Governing law and contact

Questions about permitted uses, redistribution, licensing exceptions, team-size upgrades, or commercial use beyond the §1a thresholds: license@datumhue.com.

Postal mail may be addressed to Shuusei AB (org. nr 559146-8292), Hällebergsgatan 36, 442 54 Ytterby, Sweden.

Platform edition license

DatumHue Platform Desktop Client License

Version 1.2 — 2026-08-01

This license covers the DatumHue Platform Desktop Client: the platform-connected datumhue desktop binary sold on datumhue.app. It is distinct from the Personal and Indie editions (which are offline products with their own update window) and from the enterprise agreement.

0. Acceptance

You accept this license by clicking "Accept" in the click-through dialog presented at first launch of the binary. The full text of this license is embedded in the binary and shown in that dialog. If you do not accept the terms, click "Decline" — the binary will exit. Refunds are governed by §5.

Running the binary additionally requires the platform license file issued to you at purchase. The binary verifies it locally on every launch — entirely offline; nothing about the license is transmitted to the platform — and the file encodes who the license was sold to and that it is the platform desktop client. Once the license is verified the client connects to the platform to operate (see §2).

1. The binary (`datumhue` platform desktop client)

The datumhue platform desktop client, its embedded shaders, and every other compiled artifact bundled alongside it are proprietary software, licensed and not sold. On purchase from Shuusei AB's official store on datumhue.app (or a direct order placed with Shuusei AB), Shuusei AB ("we", "us"), the Swedish company publishing DatumHue, grants you ("the licensee") a perpetual, worldwide, non-exclusive, non-transferable license to use the platform desktop client subject to the terms below.

1a. Grant — who may use the binary

You may install and run the platform desktop client on any number of devices that you personally own or control, for any purpose — personal, hobbyist, educational, or commercial. One purchase covers one person.

Within a team or organization, additional use is permitted only if, at the time of use, all of the following are true:

The team consists of five (5) or fewer individual contributors who use the binary, counted across all purposes and devices.
The organization employing or engaging those contributors has annual gross revenue below USD 1,000,000 (or the equivalent in another currency, measured as of the end of its most recent fiscal year).

Teams or organizations above either threshold must obtain a separate commercial license from Shuusei AB. Contact us to arrange one — we don't expect to be unreasonable about it, but the platform client's price does not include enterprise seat counts or Fortune-500 deployments, and the enterprise contract is where that use belongs.

1b. Always-latest — no update window

This license is perpetual and, unlike the Personal and Indie editions, carries no update window: there is no version cap to renew. The platform desktop client keeps itself current automatically, always running the latest release distributed through datumhue.app. The bundled updater fetches and applies new releases as they are published; by accepting this license you authorize it to do so.

Shuusei AB does not guarantee stability of the DatumHue API surface between releases: the automatic updates may:

Remove, rename, or re-signature scripting API calls;
Change default capability gates;
Require you to edit your scripts to keep running.

Update notes for every release call out breaking changes clearly so you can decide when to migrate the scripts you author.

1c. Permitted uses

You may:

Use the platform desktop client to run programs you obtain from the platform's package registry, and local scripts of your own authorship or scripts you are otherwise legally entitled to run.
Make a reasonable number of copies of the binary for backup, disaster recovery, and personal archival. Every copy must retain this license intact, and each copy still requires the platform connection of §2 and your own platform license file to run.
Use the platform desktop client to develop commercial products whose output is your own scripts, data, or media — Shuusei AB claims no ownership or royalty in anything you author with it. See §1e.

1d. Reserved rights — what is not granted

All rights not expressly granted in §1a–§1c are reserved. In particular, you may not:

Reverse engineer, decompile, or disassemble the binary, except to the minimum extent expressly permitted by non-waivable provisions of applicable law (e.g. Article 6 of the EU Software Directive for interoperability with independently-created software).
Extract, repackage, or redistribute the binary's compiled code, embedded shaders, fonts, or other non-source assets as part of another product, library, asset pack, or toolkit.

You are free to sell, license, or otherwise distribute the programs, games, tools, assets, and data that you authored — your work remains entirely yours (see §1e). The restriction is specifically on shipping the DatumHue runtime alongside your product. This license does not include the redistributable runtime or the license-bound packaging tooling; those are the Indie edition's grants. The distribution path for programs you author is the platform package registry, which other DatumHue users reach through their own client.
Rebrand the binary, distribute it under a different name, or present it as a competing engine, runtime, or development tool.
Impersonate Shuusei AB or DatumHue — you may not use the Shuusei AB or DatumHue names, logos, or branding elements to endorse or identify your own products without written permission. Factual "made with DatumHue" credits in games, articles, videos, and tutorials are welcome and do not require permission.
Circumvent or remove any capability gates, sandboxing mechanisms, runtime safeguards, the automatic updater, or the license verification in the binary.
Redistribute the binary or your platform license file to third parties in any form. Each user must obtain their own license from the platform. If your product needs to ship a DatumHue runtime to its end users, that is what the Indie edition licenses; multi-user and organization-wide deployments are covered under a separate enterprise agreement (contact license@datumhue.com).
Operate the binary as a hosted or managed service — you may not offer DatumHue itself (or any service whose substantial value is multi-user or multi-tenant access to a running DatumHue instance) to third parties over a network, whether free or paid. Running the binary on your own remote machine for your own use is not a hosted service.
Use the binary to build a competing offering — you may not use the binary, its documentation, or observation of its behavior to develop, train, or improve a product or service that competes with DatumHue as a creative workstation, engine, or runtime. This restricts using our work against us; it does not restrict you from building anything else, including tools in the same broad market that you build independently. It also does not limit any act permitted by non-waivable provisions of applicable law, including observing, studying, or testing the functioning of the program under Article 5(3) of the EU Software Directive.

1e. Your scripts and your data

The scripts you write, the assets your scripts load or produce, and any files your scripts create on your filesystem are entirely yours. Shuusei AB claims no ownership in, and takes no license to, any of that content. The platform connection of §2 carries the platform's own data — your account, the programs you fetch from the registry, and automatic updates; your use of the platform itself is governed by the platform terms published on datumhue.app. Personal data carried over that connection — your account identity and your entitlements — is processed by Shuusei AB as controller under the DatumHue Platform Privacy Policy also published on datumhue.app.

1f. Termination

2. The platform connection

The platform desktop client is a platform-connected product, not an offline one. It requires a connection to the DatumHue platform (datumhue.app) to operate: after verifying your license offline at launch, it connects to the platform to load programs from the platform package registry, to deliver content, and to receive the automatic updates of §1b.

This license is not bound to specific packages and does not include the redistributable runtime. The programs you run come from the platform registry through any DatumHue client; the registry handles the runtime-licensing question for those programs. Your use of the platform itself — your account, the registry, content delivery — is governed by the platform terms published on datumhue.app.

Your license is perpetual in that it has no time limit and is not revoked except under §1f — but because the platform desktop client is platform-connected, it functions only while the DatumHue platform (datumhue.app) operates. Shuusei AB may evolve, suspend, or discontinue the platform, as set out in the platform terms; if the platform is discontinued, Shuusei AB will give reasonable advance notice, after which the platform desktop client may stop working. The platform desktop client does not convert into an offline edition, and this license does not entitle you to one — the Personal and Indie editions are separate products.

3. Warranty disclaimer

The platform desktop client is provided "AS IS", without warranty of any kind, express or implied, including but not limited to the implied warranties of merchantability, fitness for a particular purpose, title, and non-infringement. We do not warrant that the binary or the platform will be uninterrupted, error-free, secure, or suitable for your use case.

To the maximum extent permitted by applicable law, Shuusei AB and its contributors are not liable for any direct, indirect, incidental, special, consequential, or exemplary damages arising out of your use of the binary or the platform — including loss of data, loss of revenue, business interruption, or any other commercial damages or losses — even if advised of the possibility of such damages. Some jurisdictions do not allow these limitations; in those jurisdictions the disclaimer applies to the fullest extent permitted.

4. Third-party components

The binary links against open-source libraries that carry their own licenses. A complete list of every included component, its version, and its license text is published with the platform desktop client as THIRD-PARTY-LICENSES.txt. Those components are governed by their own license terms and are not affected by this document.

5. Refunds

When you buy a license directly from Shuusei AB (through the datumhue.app checkout), the license is delivered to you immediately. At checkout you expressly request immediate delivery and acknowledge that, once the license has been delivered, you lose the statutory 14-day right of withdrawal that would otherwise apply to a distance purchase. A delivered license is therefore non-refundable as a change-of-mind return — there is nothing to return, and the license is not revoked except on the limited termination grounds in §1f.

This does not affect your statutory remedies if the platform desktop client is defective or not as described. Nothing in this section limits any mandatory refund, repair, replacement, price reduction, or other consumer-protection remedy that the law of your country of residence gives you and that cannot be waived (see §3), including under the Swedish Konsumentköplagen (2022:260).

6. Changes to this license

Future releases of the platform desktop client may ship under an updated version of this license. Because the client is always-latest (§1b), an automatic update may bring an updated license; the version in effect is the one shown to you in the acceptance dialog, identified by the Version line at the top of this file. You are never charged again for accepting an updated version of these terms.

A material change to these terms is presented for your acceptance before it takes effect; you are not bound by a materially changed version unless you accept it. Because the client is always-latest and platform-connected (§1b, §2), declining a material change means discontinuing use of the platform desktop client rather than continuing on the prior version.

7. General terms

Liability cap. To the extent any liability cannot be excluded under §3, Shuusei AB's total aggregate liability arising out of or in connection with this license is limited to the amount you paid for the platform desktop client. This does not limit liability that cannot be limited by law, or any non-waivable consumer right (see §3).
Order of precedence. This license governs the platform desktop client software; the platform terms published on datumhue.app govern the platform service; and each program you obtain has its own license. Where they conflict on a subject, the document specific to that subject controls.
Entire agreement. This license is the entire agreement between you and Shuusei AB regarding the platform desktop client software.
Severability. If any provision is held unenforceable, the remaining provisions stay in effect and the unenforceable provision applies to the maximum extent permitted.
No waiver. Shuusei AB's failure to enforce a provision is not a waiver of its right to enforce it later.
Assignment. Shuusei AB may assign this license, for example in connection with a merger, acquisition, or sale of assets. Your license is non-transferable (§1a).
Export and sanctions. You must not use or export the binary in breach of applicable export-control or economic-sanctions law.
Capacity. You must be old enough to enter a binding contract where you live in order to accept this license.
Notices. Shuusei AB may send notices to the contact associated with your purchase; you can reach Shuusei AB at license@datumhue.com.
Survival. The warranty disclaimer, liability limits, reserved rights, and governing-law provisions survive termination.

8. Governing law and contact

Questions about permitted uses, redistribution, licensing exceptions, team-size upgrades, or commercial use beyond the §1a thresholds: license@datumhue.com.

Postal mail may be addressed to Shuusei AB (org. nr 559146-8292), Hällebergsgatan 36, 442 54 Ytterby, Sweden.

Enterprise edition license

DatumHue Enterprise License Agreement

Version 1.1 — 2026-08-01

This agreement covers the DatumHue Enterprise edition: the full networked DatumHue platform — workstation and browser clients, aggregators, service providers, deployment tooling, and manuals — deployed and operated on infrastructure the customer controls, self-hosted or air-gapped. It is distinct from the Personal and Indie editions, the free networked client, and the platform offerings on datumhue.app, each of which has its own license.

Business customers only. The Enterprise edition is sold to companies, public bodies, and other legal entities for their internal business use. It is not a consumer product, and this agreement is a business-to-business contract.

0. Acceptance

This agreement is entered into between Shuusei AB (org. nr 559146-8292, Hällebergsgatan 36, 442 54 Ytterby, Sweden — "we", "us"), the Swedish company publishing DatumHue, and the legal entity identified at checkout ("the customer", "you").

You accept this agreement by checking the acceptance box in the datumhue.com checkout and completing the purchase. The person who does so confirms that they are authorized to bind the customer, and that the purchase is made for business purposes. Your subscription (§4) starts when the purchase completes.

Terms printed on a purchase order, procurement portal, or other document you send us do not apply, even if we process the order, unless we have expressly accepted them in writing.

1. Definitions

Software — the DatumHue Enterprise binaries delivered in your bundles: clients, the aggregator, service providers, and deployment tooling, together with their manuals and the license verification they embed.
Deployment — the Software installed and operated in infrastructure you control.
Aggregator instance — each running instance of the Software's central coordination component (connection relay, discovery, and content tracking) in your deployment.
Provider instance — each running instance of a DatumHue service provider (such as a package registry, file service, data service, identity service, or ingress/egress service) in your deployment.
Concurrent sessions — the highest number of simultaneously connected client sessions against your deployment at any moment. Sessions reaching the deployment through a proxy, gateway, multiplexer, or similar arrangement count as the number of underlying client sessions. Seats are measured only as concurrent sessions — never per named user, per installed device, or per employee.
License size — the number of aggregator instances, provider instances, and concurrent sessions your subscription covers at any time (§4).
License file — the file we issue that encodes your license size and validity and that the Software verifies (§3).
Subscription — your active monthly or yearly subscription purchased through the datumhue.com checkout (§4).

2. License grant

Subject to this agreement and your active subscription, Shuusei AB grants you a non-exclusive, non-transferable license, for the duration of your subscription, to install and use the Software in infrastructure you control, for the internal business purposes of you and the affiliates you control, up to your license size.

Use by an affiliate counts against your license size exactly as your own use does, and you are responsible for your affiliates' compliance with this agreement. An entity "controls" another when it directly or indirectly owns more than half of it or otherwise directs its management.

Your employees and the individual contractors working for you may use the deployment as part of their work for you. They need no license of their own; their sessions count as concurrent sessions.

The deployment may be fully disconnected from the public internet. Nothing in the Software requires a connection to us to serve your users; the only outward-facing mechanism is license renewal (§3), which has an offline path.

3. The license file — how the license is enforced

Delivery consists of (i) your bundles — binaries and manuals — made available for download at the address given in your order confirmation, and (ii) your license file, delivered by email to your billing contact. Delivery is complete when both have been made available to you; the Software does not operate without the license file. A replacement copy of your current license file is re-sent to your billing contact on request.

The license file encodes your license size and a validity period, and the Software verifies it locally. While your subscription is active, renewed license files are issued automatically: a connected deployment picks them up over the network, and for deployments without outbound connectivity the bundles include an offline renewal tool — run on any machine with internet access, it obtains the renewed license file for you to transfer and install manually, and no data about your deployment or users leaves your infrastructure beyond the license file itself.

If your subscription lapses (§4), license files stop being renewed. The deployment continues to operate through a built-in grace period, after which it stops admitting new client sessions until a valid license file is present. Nothing is deleted: your content, packages, and data remain yours (§9) and remain on your infrastructure.

You may not circumvent, disable, or interfere with the license verification, and you may not share the license file outside your organization — treat it as a credential.

4. Subscription, size, and billing

Plans. The Enterprise edition is sold as a monthly or yearly subscription, priced by license size according to the price list shown at checkout. Both plans renew automatically until cancelled. Your organization may run several subscriptions at once — each covers one deployment, with its own license file, license size, and billing.

Changing size. You may change your license size at any time through the self-serve resize page linked from the enterprise page on our website: present your license file and confirm the change with a code we send to your billing contact.

An increase takes effect immediately. The added capacity is charged pro rata for the remainder of the current billing period.
A decrease takes effect at the start of your next billing period. Nothing is refunded for the current period.

Renewal and reminders. For a yearly subscription we send a renewal reminder to your billing contact at least thirty (30) days before each renewal date. Monthly subscriptions renew without a reminder.

Cancellation. You may cancel at any time through the subscription page linked in every billing email. Cancellation takes effect at the end of the billing period already paid for; the license file then stops renewing as described in §3. You can re-subscribe later: present your existing license file when starting the new subscription and it resumes the same license — your deployment identity is preserved. A subscription started without a license file is a new, separate license for a new deployment.

Non-payment. If a renewal charge fails, we retry per our payment provider's schedule and notify your billing contact. If payment is not completed, the subscription ends and §3's lapse consequences apply. Settling the outstanding payment or re-subscribing restores the license.

Price changes. We may change subscription prices. A price change applies to you no earlier than your next renewal, and only if we notified your billing contact at least thirty (30) days before that renewal. If you do not accept the new price, cancel before the renewal; until then the old price applies.

Taxes. Prices exclude VAT and other applicable taxes, which are added at checkout where required.

5. Usage restrictions

The Software is licensed for your internal deployment, not for redistribution or resale. Except as expressly permitted by this agreement or by non-waivable provisions of applicable law, you may not:

Redistribute the Software — copy, publish, sell, rent, lease, or otherwise make the binaries available to any third party, integrate them into or bundle them with a product of yours, or distribute them as an OEM component.
Operate the deployment as a service for third parties — make the deployment, or any service whose substantial value is access to it, available to the general public or to customers of yours. Serving your own workforce (employees and contractors working for you, §2) is the product's purpose and is not restricted; serving the public is what the DatumHue platform (datumhue.app) is, and that right is reserved to Shuusei AB. You may not use the Software to provide, directly or indirectly, a service that competes with Shuusei AB's public platform.
Reverse engineer, decompile, or disassemble the Software, except to the minimum extent expressly permitted by non-waivable provisions of applicable law (e.g. Article 6 of the EU Software Directive for interoperability with independently-created software).
Circumvent or remove any capability gates, sandboxing mechanisms, runtime safeguards, or license verification in the Software, including the metering behind the license size.
Rebrand the Software or present it as your own or a competing engine, runtime, or development tool. Factual "runs on DatumHue" statements are welcome.
Impersonate Shuusei AB or DatumHue — you may not use the Shuusei AB or DatumHue names, logos, or branding elements to endorse or identify your own products without written permission.
Use the Software to build a competing offering — you may not use the Software, its documentation, or observation of its behavior to develop, train, or improve a product or service that competes with DatumHue as a creative workstation, engine, or runtime. This restricts using our work against us; it does not restrict you from building anything else, and it does not limit any act permitted by non-waivable provisions of applicable law, including Article 5(3) of the EU Software Directive.

A material breach of this section entitles Shuusei AB to terminate the agreement under §14.

6. Third-party components

The Software links against open-source libraries that carry their own licenses. A complete list of every included component, its version, and its license text is distributed with your bundles as THIRD-PARTY-LICENSES.txt and updated with each release. Those components are governed by their own license terms; where such a term is irreconcilable with this agreement, the component's own term controls for that component. Shuusei AB gives no warranties for third-party components beyond §11 and their own licenses.

7. Updates and new versions

While your subscription is active, every release of the Enterprise edition is available to you, including releases that fix security vulnerabilities — they ship as ordinary releases at no extra charge. Each release is accompanied by update notes listing the changes that affect the Software's public surfaces.

You decide if and when to update your deployment. Shuusei AB is not responsible for issues that an available update would have fixed.

Shuusei AB does not guarantee stability of the scripting API surface between releases: a release may remove, rename, or re-signature scripting API calls, change default capability gates, or require your operators to edit deployed scripts. Update notes call out breaking changes clearly so you can decide when to migrate.

8. Support

Support is provided through the ticket system named in your order confirmation and in the manuals. You report defects and ask installation and usage questions by registering tickets; prioritization and resolution are at Shuusei AB's discretion, and no response or resolution time is guaranteed beyond §11.

Support covers defects in the Software and questions about installing and operating it. It does not cover your infrastructure, your customizations and scripts, faults caused by third-party software, or issues an available update would have fixed.

Tickets must not contain personal data or confidential information about your business; §13 applies to what you nevertheless disclose.

Services beyond this — installation assistance, custom development, training, operations consulting — are available under separate agreement and are not part of the subscription.

9. Your deployment and your data

Everything in your deployment is yours: the content your users create, the packages your operators publish into it, the data your providers serve, and the accounts your identity service manages. Shuusei AB claims no ownership in, and takes no license to, any of it.

The Software sends no telemetry to Shuusei AB. The only data that reaches us from a connected deployment is the license renewal exchange of §3 — which carries license identity, not content and not your users' personal data. You are the data controller for all personal data processed in your deployment; Shuusei AB does not process personal data on your behalf under this agreement, and no data processing agreement is required for it. If we later agree on support services that require access to personal data, a data processing agreement must be concluded first.

The order and billing data we process to sell and administer your subscription — your company details, billing contact, and payment history — is processed by Shuusei AB as controller, with payment processing performed by our payment provider, as described in the privacy policy published on datumhue.com. There is no user account: your subscription is administered entirely through the checkout, the subscription page, and email to your billing contact.

10. Intellectual property and infringement defense

All intellectual property rights in the Software, including updates, belong to Shuusei AB or its licensors. This agreement transfers no ownership; you receive only the license of §2.

If a third party claims that the Software, used as delivered and in accordance with this agreement, infringes their intellectual property rights, Shuusei AB will defend you at its own expense and pay the damages finally awarded against you or agreed in settlement, provided that you (i) notify us of the claim without undue delay, (ii) let us control the defense and any settlement negotiations, and (iii) reasonably cooperate at our expense.

If such a claim is made or appears likely, Shuusei AB may at its option procure your right to continue using the Software, modify or replace it so it is non-infringing, or — if neither is commercially reasonable — terminate the affected license and refund the fees you prepaid for the period after termination.

This defense does not cover claims arising from your modifications, from combination with software or systems not supplied by us where the Software alone would not infringe, or from use in breach of this agreement. This section states your exclusive remedy and our entire liability for third-party infringement claims, subject to §12.

11. Limited warranty

Shuusei AB warrants that the Software materially conforms to its accompanying manuals. We will remedy material non-conformities that are attributable to us with reasonable promptness through the support channel of §8, where they take priority over other tickets.

We do not warrant that the Software is compatible with your infrastructure or with other vendors' software, or that operation will be uninterrupted or error-free. Except as stated in this section, the Software is provided "AS IS" and all other warranties, express or implied — including merchantability, fitness for a particular purpose, title, and non-infringement — are disclaimed to the maximum extent permitted by law.

12. Limitation of liability

Except in cases of intent or gross negligence, each party's total aggregate liability under this agreement, per twelve-month period, is limited to direct damages and capped at the subscription fees you paid for the twelve (12) months preceding the event giving rise to liability.

Neither party is liable for indirect or consequential damage — lost profits, loss of data, business interruption, or third-party claims other than as set out in §10. These limitations do not apply to breaches of §13 (confidentiality), to your breach of §5 (usage restrictions), or to liability that cannot be limited under applicable law. Nothing in this agreement excludes or limits liability for death or personal injury caused by negligence, or for damage caused by gross negligence or wilful misconduct.

13. Confidentiality

Neither party will disclose to any third party confidential information received from the other, or use it for any purpose other than performing this agreement. Confidential information is any information a party reasonably should understand to be confidential, including the Software's internals and your deployment details.

This obligation applies during the agreement and for three (3) years after it ends. It does not cover information that is or becomes public through no breach, was received from a third party without confidentiality obligation, or must be disclosed under law or a public authority's order.

14. Term and termination

This agreement runs from acceptance for as long as you hold an active subscription, and through the §3 grace period after a lapse.

Either party may terminate the agreement with immediate effect if the other materially breaches it and does not cure within thirty (30) days of written notice, or if the other becomes insolvent, enters bankruptcy or company reorganization, or suspends payments.

When the agreement ends — by cancellation and lapse, or by termination — your right to use the Software ends. You must stop using and delete the Software; on request you will confirm deletion in writing. Your content and data are yours (§9) and are unaffected; exporting them before deleting the Software is your responsibility, and the Software's formats and export paths are documented in the manuals. Termination by us for your breach entitles you to no refund; termination by you for our uncured breach entitles you to a refund of fees prepaid for the period after termination.

The provisions on confidentiality, liability, reserved rights, governing law, and this sentence survive termination.

15. Force majeure

Neither party is liable for failure to perform an obligation caused by circumstances beyond its reasonable control that it could not reasonably have foreseen or avoided and whose consequences it could not reasonably have overcome. The affected party must notify the other without undue delay. If such a circumstance prevents performance for more than sixty (60) days, either party may terminate the agreement without liability for the failure.

16. Changes to this agreement

We may publish updated versions of this agreement. An updated version applies to you from your next renewal at the earliest, and for material changes only if we notified your billing contact at least thirty (30) days before that renewal, identifying the change. If you do not accept an updated version, cancel before the renewal; the version you last accepted governs until your subscription ends. The version in effect for you is identified by the Version line at the top of this file.

17. General terms

Entire agreement. This agreement, together with the price list and license size confirmed at checkout, is the entire agreement between you and Shuusei AB regarding the Enterprise edition and supersedes prior understandings about it (see also §0 on purchase order terms).
Severability. If any provision is held unenforceable, the remaining provisions stay in effect and the unenforceable provision applies to the maximum extent permitted.
No waiver. A party's failure to enforce a provision is not a waiver of its right to enforce it later.
Assignment. Neither party may assign this agreement without the other's written consent, except that either party may assign it to an entity acquiring all or substantially all of the business it concerns, and Shuusei AB may assign it within its group — in each case with written notice, and provided the assignee assumes the assignor's obligations.
Export and sanctions. You must not use or export the Software in breach of applicable export-control or economic-sanctions law, and you represent that you are not a sanctioned party.
Notices. We send notices to the billing contact email associated with your subscription; keep it current through the subscription page. You can reach Shuusei AB at license@datumhue.com. Notices are deemed received when sent by email to those addresses.

18. Governing law and disputes

This agreement is governed by and construed in accordance with the laws of Sweden, without regard to its conflict-of-laws principles. Disputes arising out of or in connection with this agreement — including questions about its existence, validity, interpretation, or termination — are subject to the exclusive jurisdiction of the Swedish courts, with Gothenburg District Court (Göteborgs tingsrätt) as the court of first instance. Shuusei AB may nevertheless apply for payment orders for due invoices in any competent forum.

Questions about license sizing, affiliates, air-gapped deployment, or anything else in this agreement: license@datumhue.com.

Postal mail may be addressed to Shuusei AB (org. nr 559146-8292), Hällebergsgatan 36, 442 54 Ytterby, Sweden.

Platform Terms of Use

DatumHue Platform — Terms of Use

Version 1.2 — 2026-07-30

These terms govern your use of the DatumHue platform at datumhue.app: your account, discovering and installing packages, buying paid packages from creators, and the purchases you make from Shuusei AB itself (§4). They are between you and Shuusei AB, the Swedish company that operates the platform.

Scope. Your use of the DatumHue workstation software is governed by the license you obtained it under. These terms govern the platform service. The packages you install or buy are third-party content published by independent creators and are governed by the terms each creator grants you. This is the "platform terms published on datumhue.app" referenced by the DatumHue platform-client license.

1. The platform and your account

The platform lets you sign in, discover packages published by creators, install them, and — for paid packages — buy them from the creator who published them.
You are responsible for your account and for keeping your sign-in credentials secure.
The platform is operated as a service. We may evolve, suspend, or discontinue parts of it or the platform as a whole; if we discontinue the platform, we give reasonable advance notice. We will not act in a way that retroactively revokes a perpetual entitlement you already hold (see §3).
The web client software. The DatumHue web client served at datumhue.app is proprietary software that Shuusei AB licenses to you for use, in your browser, as part of the platform — free of charge. You may use it to run programs from the platform; you may not reverse-engineer, copy, redistribute, or rebrand it, or remove its safeguards. It is provided "as is" (see §8). The desktop client is licensed separately under its own end-user license.

2. Packages are third-party content

Packages on the platform are published by independent creators, not by Shuusei AB. We do not author, review, vet, endorse, or control them, and we make no representation about any package's quality, safety, accuracy, security, or fitness for a purpose.
Every package — free or paid — is provided to you "as is" by its creator. You install and run packages at your own discretion and risk.
Shuusei AB is not responsible for a package's behavior or for any outcome of using it, including data loss, incorrect results, or harm to your work. Your recourse for a problem with a package is with its creator.
A package's own license — what you may do with it — is whatever the creator grants you. These terms do not grant you any rights in a creator's package.
The license a package is provided under is shown with the package — in the store and on its package page — identified by its license id. By installing or running a package you accept that license. The full text of the freeware license (LicenseRef-DatumHue-Freeware) is published on the licenses page of this site; open licenses are the industry-standard texts their ids name; a paid package that names no license is provided under its creator's own terms.

3. Buying paid packages

When you buy a paid package, the creator is the seller and merchant of record. Shuusei AB only facilitates the transaction (payment is processed by Stripe and settled to the creator's connected account); Shuusei AB never holds your funds and is not a party to the sale of the package itself.
Your purchase contract for the package is with the creator. The license and any support, warranty, or promises about the package come from the creator, not from Shuusei AB.
Non-refundable; what your purchase gives you. A purchase grants a perpetual entitlement to the package name you bought — covering that package's versions — held on your device and verified offline; Shuusei AB does not revoke it. Because the package is delivered immediately, at checkout you request that immediate delivery and acknowledge that you thereby lose the statutory 14-day right of withdrawal for your purchase from the creator, so the purchase is non-refundable as a change-of-mind return. Your entitlement is not a guarantee of continued delivery: re-downloading a package depends on its creator's provider, so a creator's retraction of a version, or a withdrawal of that creator's platform authority, can interrupt it, and a package may stop working in a future version of DatumHue (§5).
Refund requests, complaints, and disputes about a package go to the creator as the merchant of record. Payment disputes are between you, the creator, and the payment processor; Shuusei AB does not arbitrate them.
Nothing in this section removes a mandatory refund or right of withdrawal that consumer-protection law in your country of residence grants you and that cannot be waived (see §8).

4. Buying from Shuusei AB

The DatumHue editions sold on datumhue.com and datumhue.app (the Personal, Indie, and Platform desktop clients) and the creator subscription are sold by Shuusei AB as the seller, with checkout hosted by Stripe.
The software you buy is governed by its own end-user license — shown at first launch and published on the Licenses page — not by these terms. These terms govern the platform service around the purchase.
An edition license is delivered to you immediately by email. At checkout you expressly request immediate delivery and acknowledge that, once the license has been delivered, you lose the statutory 14-day right of withdrawal that would otherwise apply to a distance purchase, so the purchase is non-refundable as a change-of-mind return. Your statutory remedies for a defective product are unaffected (see §8).
The creator subscription is billed as a recurring charge through Stripe until you cancel. You may cancel at any time; cancellation takes effect at the end of the paid billing period, publishing admission ends with it, and already-paid periods are not refunded. The publishing relationship itself is governed by the Creator Terms of Use.

5. No maintenance or compatibility guarantee

Keeping a package working is the creator's responsibility, not Shuusei AB's. We do not maintain, update, patch, fix, or guarantee the continued operation of any creator package, free or paid.
The DatumHue API is explicitly pre-stable and evolves between releases. A package — including one you have bought — may stop working in a future version of DatumHue unless its creator keeps it up to date.
Updates, bug fixes, and compatibility with new DatumHue versions are provided at the creator's discretion. Buying a package does not entitle you to any future update or to a guarantee that it will keep running.

6. Acceptable use

You may not probe, circumvent, or overload the platform's sign-in, entitlement, or delivery machinery, attempt to obtain paid packages without paying for them, or use the platform to distribute unlawful or malicious content.

7. Privacy and data protection

Shuusei AB is the controller of the personal data the platform processes about you. We keep what we collect to a minimum: a Google account identifier and email so you can sign in, and a record of which packages your account owns together with a payment reference. Payment card data is handled entirely by Stripe and is never held by Shuusei AB, and we never hold buyer funds. We use essential cookies only — no analytics, tracking, or advertising — and we do not sell your data.

How we process this data, our legal bases, who we share it with (Google for sign-in, Stripe for payments, our EU hosting provider, and the creators whose packages you buy — who receive only the data needed to deliver a purchased package, not your Google identity), international transfers, how long we keep data, and your rights — including how to reach the Swedish supervisory authority, IMY — are set out in full in the DatumHue Platform Privacy Policy, which forms part of these terms. For any data-protection matter, contact privacy@datumhue.com.

8. Warranty disclaimer and liability

The platform is provided "AS IS", without warranty of any kind, express or implied, including the implied warranties of merchantability, fitness for a particular purpose, and non-infringement. We do not warrant that the platform will be uninterrupted, error-free, or secure, and we disclaim all warranties for creator packages, which are third-party content (see §2).

To the maximum extent permitted by applicable law, Shuusei AB is not liable for any indirect, incidental, special, consequential, or exemplary damages arising out of the platform, a creator package, or these terms — including loss of data, loss of revenue, or business interruption — even if advised of the possibility. Nothing in this section waives a mandatory consumer-protection right or remedy that cannot be waived under the law of your country of residence, including the Swedish Konsumentköplagen (2022:260) or equivalent legislation where you live. Nothing in these terms excludes or limits Shuusei AB's liability for death or personal injury caused by its negligence, or for damage caused by its gross negligence or wilful misconduct.

9. Changes to these terms

We may update these terms; the version that governs a purchase is the one in effect when you made it. The version is identified by the Version line at the top of this document. Material changes to the ongoing platform service take effect after reasonable notice; continuing to use the platform after the notice period constitutes acceptance.

10. General terms

Liability cap. To the extent any liability cannot be excluded under §8, Shuusei AB's total aggregate liability for the platform is limited to one hundred euro (EUR 100). This does not limit liability that cannot be limited by law (see §8). A paid package is a contract with its creator, not with Shuusei AB (see §3).
Order of precedence. Your platform desktop client license governs that software; these terms govern the platform service; and each creator's package carries its own license. Where they conflict on a subject, the document specific to that subject controls.
Your use. You will indemnify Shuusei AB against third-party claims arising from your breach of these terms or your unlawful use of the platform.
Entire agreement. These terms are the entire agreement between you and Shuusei AB regarding the platform service.
Severability. If any provision is held unenforceable, the remaining provisions stay in effect and the unenforceable provision applies to the maximum extent permitted.
No waiver. Shuusei AB's failure to enforce a provision is not a waiver of its right to enforce it later.
Force majeure. Neither you nor Shuusei AB is liable for a failure to perform an obligation under these terms — including operating the platform service or delivering a §4 purchase — caused by circumstances beyond the affected party's reasonable control that it could not reasonably have foreseen, avoided, or overcome. The affected party must notify the other without undue delay. If such a circumstance prevents performance for more than sixty (60) days, either party may end the affected service relationship — for you, by closing your account — without liability for the failure. This does not limit §8's protection of mandatory consumer rights.
Assignment. Shuusei AB may assign these terms, for example in connection with a merger, acquisition, or sale of assets. You may not assign them without Shuusei AB's consent.
Export and sanctions. You must not use the platform in breach of applicable export-control or economic-sanctions law.
Capacity. You must be old enough to enter a binding contract where you live in order to use the platform.
Notices. Shuusei AB may give notices through the platform or to the contact on your account; you can reach Shuusei AB at support@datumhue.com.
Survival. The disclaimers, liability limits, force-majeure relief, and governing-law provisions survive termination.

11. Governing law and contact

These terms are governed by and construed in accordance with the laws of Sweden, without regard to its conflict-of-laws principles. Any dispute arising out of or in connection with these terms is subject to the exclusive jurisdiction of the Swedish courts, with Gothenburg District Court (Göteborgs tingsrätt) as the court of first instance.

Nothing in this section deprives a consumer residing in the European Union or European Economic Area of the protection of the mandatory consumer-protection law of their country of residence, including the right to bring or defend proceedings in the courts of that country.

Questions about the platform, purchases, or these terms: support@datumhue.com. Questions about a specific package go to its creator.

Freeware Package License

DatumHue Freeware Package License

SPDX id: LicenseRef-DatumHue-Freeware — Version 1.0 — 2026-07-03

This license covers a package distributed for DatumHue under the SPDX identifier LicenseRef-DatumHue-Freeware. It applies to the published package artifact — the sealed, compiled bundle and its assets — not to any DatumHue binary, which is covered by its own license. It applies regardless of which DatumHue edition runs the package: the platform client, the Personal or Indie edition, an evaluation bundle, or any other licensed DatumHue client.

1. Grant

The rights holder named in the package manifest grants you, free of charge, a non-exclusive, non-transferable right to:

download and run the package with any licensed DatumHue client, and
redistribute the published artifact as-is to other DatumHue users as part of DatumHue's content distribution (including its peer-to-peer distribution), unmodified and in whole.

2. Reservations

All rights not expressly granted are reserved by the rights holder. You may not:

decompile, disassemble, or otherwise reverse engineer the package's compiled code, or attempt to reconstruct its source;
modify the package or create derivative works from it;
extract its code or assets for use outside the package;
redistribute it outside DatumHue's content distribution, or sell, rent, or sublicense it.

3. No warranty

The package is provided "as is", without warranty of any kind. To the maximum extent permitted by law, the rights holder disclaims all liability arising from its use.

4. Termination

This license ends automatically if you breach it. On termination you must delete your copies of the package.

5. Governing law

This license is governed by the laws of Sweden. Disputes shall be settled by the Gothenburg District Court (Göteborgs tingsrätt) as first instance.

Creator Terms of Use

DatumHue Platform — Creator Terms of Use

Version 1.2 — 2026-07-30

These terms govern publishing content on the DatumHue platform as a creator: operating a package provider admitted to the platform, holding a platform namespace, and distributing packages to platform users through it. They are between you — the holder of the account that completed creator onboarding and claimed the namespace — and Shuusei AB. You accept them at onboarding, and they govern for as long as you publish.

Scope. These terms cover your publishing relationship with the platform. Your use of DatumHue workstation software is governed by the license you obtained it under; your end users' use of your packages is governed by the terms you grant them.

1. Your namespace

Shuusei AB assigns you a namespace and admits your package provider to the platform for it. The namespace remains platform infrastructure: you hold publishing authority over it, not ownership of it.
Publishing authority is technical as well as contractual — your provider is admitted by credentials issued to you. You may not share, sell, sublicense, or transfer those credentials or the namespace.
Namespace assignments are unique per creator. Impersonating another creator, person, or organization through a namespace name is a breach.

2. Your subscription

Admission to the platform — your namespace's publishing authority and your provider's platform connection — is conditioned on an active creator subscription, billed at the recurring fee and period presented at your subscription checkout.
You may cancel at any time. Cancellation, or a lapse in payment, ends admission at the end of the paid billing period: your provider stops being admitted platform-wide. This is not a breach and is not revocation under §7; it does not, by itself, affect your rights in your own content or obligations accrued before it.
Already-paid periods are not refunded. Admission resumes when you resubscribe, at the then-current onboarding terms.

3. Credential custody

Keep your identity key private and under your control. You are responsible for everything published under your credentials.
Report a lost or suspected-compromised key to Shuusei AB without undue delay; we rotate you to fresh credentials and withdraw the old ones.
Shuusei AB never asks for your private key.

4. Your content

You retain all rights to the packages you publish. You grant Shuusei AB the non-exclusive right to store, replicate, and deliver them to platform users — that is what the platform does.
Free packages must declare an obligation-free license from the platform's allowed set — 0BSD or MIT-0, or CC0-1.0 for an asset pack. You warrant that you hold the rights to license your package this way; that license is the grant under which the platform and its users may use and redistribute it. A paid package carries the license you set, which is between you and the buyer.
You are solely responsible for your packages: that you have the rights to publish them, that they comply with applicable law, and that they are what they claim to be.
You must not publish content that is unlawful, infringes third-party rights, contains malicious code, or deliberately misuses platform or user resources.
Published versions are immutable by design. Retraction marks a version unavailable; it does not erase the record that it existed.

5. Selling paid packages

You are the seller and merchant of record for every paid package you publish. The purchase contract for the package is between you and the buyer; you set its price and its license and provide any support, warranty, or promises about it. Shuusei AB facilitates the transaction but is not a party to the sale of the package itself.
Payments run through Stripe to your own connected account. Charges for your paid packages are made on the Stripe connected account you onboard, and Stripe settles the proceeds to you directly; Shuusei AB never holds your funds.
Platform fee. Shuusei AB deducts a platform fee of fifteen percent (15%) of the purchase price of each paid-package sale, taken as the Stripe application fee on the charge at the time of sale. You receive the net of the purchase price after that fee and any Stripe processing fees. The platform fee is non-refundable.
Refunds, chargebacks, taxes, and disputes are yours. As the merchant of record you are responsible for honoring statutory refund and withdrawal rights, for resolving buyer complaints and chargebacks, and for assessing, collecting, and remitting any taxes due on your sales. Where a buyer is entitled to a refund under applicable law, you provide it; the platform fee on a refunded sale is not separately returned to you, as it was deducted from your proceeds at the time of sale.
Buyer data and privacy. To deliver a purchased package your provider receives only the entitlement and delivery data needed for that delivery — not the buyer's Google account identity, which stays with Shuusei AB. You process that delivery data as an independent controller under your own terms and applicable data-protection law. How the platform handles personal data is described in the DatumHue Platform Privacy Policy published on datumhue.app.
Immediate-delivery consent. Your paid packages are delivered to buyers immediately on purchase. You authorize Shuusei AB to capture, at checkout on your behalf as the seller, each buyer's express request for immediate delivery and acknowledgement that they thereby lose their statutory 14-day right of withdrawal, so that a completed purchase is final. This does not remove any mandatory consumer right the buyer's country of residence preserves.

6. Platform conduct

Operate your provider within the platform's technical rules: announce only your assigned namespace, keep your provider current with platform releases, and do not interfere with other creators' namespaces or the platform's operation.
Do not probe, circumvent, or overload the platform's admission, licensing, or delivery machinery.

7. Breach — revocation and non-renewal

On breach of these terms, Shuusei AB may revoke your namespace authority — your provider stops being admitted platform wide — and decline to renew your credentials. Revocation for cause may be immediate and without prior notice where the breach creates risk for platform users or other creators.
For remediable breaches we will ordinarily notify you and give you a reasonable opportunity to cure before or alongside revocation; restoration after cure is at Shuusei AB's reasonable discretion.
Revocation withdraws publishing authority. It does not, by itself, terminate your rights in your own content, and it does not relieve either party of obligations accrued before it.

8. Termination

You may stop publishing at any time — cancel your subscription (§2), or tell us and we withdraw your admission cleanly.
Shuusei AB may terminate these terms with reasonable notice if the platform's creator program is discontinued or restructured. §7 governs termination for breach; §2 governs subscription lapse.

9. Warranty disclaimer and liability

The platform is provided "AS IS", without warranty of any kind, express or implied. We do not warrant uninterrupted or error-free operation, nor any particular level of distribution, discovery, or revenue. To the maximum extent permitted by applicable law, Shuusei AB is not liable for indirect, incidental, special, consequential, or exemplary damages arising out of the platform or these terms — including loss of data, loss of revenue, or business interruption — even if advised of the possibility. Nothing in this section waives mandatory protections that cannot be waived under your local law. Nothing in these terms excludes or limits Shuusei AB's liability for death or personal injury caused by its negligence, or for damage caused by its gross negligence or wilful misconduct.

10. Changes to these terms

Shuusei AB may update these terms; the version that governs is the one you most recently accepted. We will give you reasonable advance notice of material changes; continuing to publish after the notice period constitutes acceptance. If you decline a change, §8.1 applies.

11. General terms

Liability cap. To the extent any liability cannot be excluded under §9, Shuusei AB's total aggregate liability arising out of or in connection with these terms is limited to the greater of the fees you paid Shuusei AB in the twelve months before the claim or one hundred euro (EUR 100). This does not limit liability that cannot be limited by law (see §9).
Your packages. You will indemnify Shuusei AB against third-party claims arising from your packages or your publishing of them, except to the extent caused by Shuusei AB.
Order of precedence. These terms govern your publishing relationship with the platform; the platform terms govern buyers' use of the platform; and each package you publish carries its own license to its buyers. Where they conflict on a subject, the document specific to that subject controls.
Entire agreement. These terms are the entire agreement between you and Shuusei AB regarding publishing on the platform.
Severability. If any provision is held unenforceable, the remaining provisions stay in effect and the unenforceable provision applies to the maximum extent permitted.
No waiver. Shuusei AB's failure to enforce a provision is not a waiver of its right to enforce it later.
Force majeure. Neither you nor Shuusei AB is liable for a failure to perform an obligation under these terms — including operating the platform's publishing services — caused by circumstances beyond the affected party's reasonable control that it could not reasonably have foreseen, avoided, or overcome. The affected party must notify the other without undue delay. If such a circumstance prevents performance for more than sixty (60) days, either party may end the publishing relationship without liability for the failure.
Assignment. Shuusei AB may assign these terms, for example in connection with a merger, acquisition, or sale of assets. You may not assign them, or share or transfer your credentials, without Shuusei AB's consent.
Export and sanctions. You must not publish or distribute through the platform in breach of applicable export-control or economic-sanctions law.
Capacity. You must be old enough to enter a binding contract where you live in order to accept these terms.
Notices. Shuusei AB may give notices through the platform or to the email address on your creator account; you can reach Shuusei AB at support@datumhue.com.
Survival. The content-rights, disclaimers, liability limits, indemnity, force-majeure relief, and governing-law provisions survive termination.

12. Governing law and contact

These terms are governed by and construed in accordance with the laws of Sweden, without regard to its conflict-of-laws principles. Any dispute arising out of or in connection with these terms — including questions about their existence, validity, interpretation, or termination — is subject to the exclusive jurisdiction of the Swedish courts, with Gothenburg District Court (Göteborgs tingsrätt) as the court of first instance.

Nothing in this section deprives a creator who is a consumer residing in the European Union or European Economic Area of the protection of mandatory consumer-protection law of their country of residence, including the right to bring proceedings in, or have proceedings brought against them in, the courts of that country.

The parties agree that the United Nations Convention on Contracts for the International Sale of Goods (CISG) does not apply to these terms.

Contact: support@datumhue.com.

DatumHue Platform — Privacy Policy

Version 1.3 — 2026-08-01

This Privacy Policy explains how Shuusei AB handles personal data across the DatumHue platform — the web client at datumhue.app, the marketing site at datumhue.com, and the documentation at datumhue.dev — when you sign in, discover and install packages, and buy paid packages from creators. It is written to meet our obligations under the EU General Data Protection Regulation (GDPR) and Swedish data-protection law.

The short version. We collect the minimum personal data the platform needs to work: who you are (a Google account identifier and email, so you can sign in) and what you own (which packages your account has bought). Payment card data is handled entirely by Stripe and is never held by us. We don't run analytics, advertising, or tracking, and we don't sell your data. The platform is built so that the authoritative purchase records live with creators and your entitlements live on your own device — we keep only the minimal ownership records and payment references needed for re-delivery and accounting.

1. Who we are (the controller)

The controller of your personal data is:

Shuusei AB (org. nr 559146-8292), a company registered in Sweden, with its registered office at Hällebergsgatan 36, 442 54 Ytterby, Kungälv (just outside Gothenburg).

For any data-protection matter — questions, requests to exercise your rights, or complaints — contact us at privacy@datumhue.com.

We have not appointed a Data Protection Officer. Our processing does not meet the threshold in Article 37 GDPR that would require one. Use the contact above for all data-protection matters.

Shuusei AB is established in Sweden (the EU), so no EU representative under Article 27 is required.

2. What this policy covers

This policy covers the platform service that Shuusei AB operates at datumhue.app: your account, package discovery and installation, the buying of paid packages, and the purchases you make from Shuusei AB itself — the DatumHue editions, the creator subscription, and the enterprise subscription (§3.4, §14) — and the consulting-request form (§3.5). It also covers our marketing site (datumhue.com) and documentation site (datumhue.dev), which are static websites — §10 describes the limited local storage they use.

It does not cover:

The packages and apps you run. Packages are third-party content published by independent creators. What a package does with data is governed by that creator's own terms, not this policy. See §9 on data a package stores on your own device.
Stripe's own processing. When you pay, Stripe processes your card and payment data under its own privacy policy and partly for its own purposes (see §5 and §7).
Google's own processing. Google operates the sign-in you use to authenticate, under Google's own privacy policy (see §5 and §7).

3. The personal data we process

We deliberately keep this list short. We process:

Account identity — a Google account identifier and email. You sign in to the platform with Google sign-in. We request only the minimum scopes (openid and email). From Google we receive your Google account identifier (the OIDC sub) and your email address. We use them only to create and identify your account and to let you sign in — the account-identity feature itself. We do not use Google user data for any other purpose, and we do not transfer it except for security, to comply with the law, or as part of a transaction you have consented to.
Entitlement and purchase records. When you buy a paid package, we record which package name your account owns together with a payment reference for the transaction. We do not store your card number, bank details, or any card data — those go directly to Stripe and are never held by us (see §5).
Connection metadata. To operate our servers and relay, our infrastructure processes technical connection data such as your IP address in transient server logs. This is used to run and secure the service, not to profile you.
Checkout and fulfillment data for purchases from us. When you buy a DatumHue edition, or start the creator or enterprise subscription, through our checkout, we receive from Stripe — after you complete payment — the email address you gave at checkout and a payment or subscription reference. We use them to deliver what you bought (a license file is generated and emailed to you), to fulfil each payment exactly once, and — for subscriptions — to keep the delivered license in step with the subscription's payment status. Like your sign-in identity, this data reaches us from a source other than you directly (Stripe, the payment processor), which we note to satisfy Article 14 GDPR.

The free trial involves no payment: you give us an email address, we deliver the trial license to it, and we record the address with our payment processor (Stripe) so that each address receives one free trial.

For the enterprise subscription we additionally process: the company or organization name you enter at checkout (stamped into the license record and the license file as the licensee); the billing contact email, which receives the license file, renewal reminders, notices this policy or the license agreement promise, and the confirmation codes that approve self-serve license changes; and the license record itself — the company name, a license identifier, and the licensed size, stored as part of the subscription with our payment processor (Stripe).
Consulting requests. When you send us a consulting request through the form linked from our marketing site, we process the name, email address, company (if you give one), and message you enter. The request is delivered to us as an email and is not stored in any other system. We use it to respond to you, and we forward it to the consulting specialists who would carry out the work so they can assess and answer your request (§5).

What we do not collect. We do not collect card or bank data (Stripe holds it). We do not run analytics, advertising, or behavioural tracking. We do not build user profiles or carry out automated decision-making (see §11). Client node identifiers used by the software are ephemeral — regenerated each time the client launches and never used as a persistent identifier or access-control key.

Source of the identity data. Your Google account identifier and email are not entered into a form on our site — they come to us from the Google sign-in provider when you authenticate. We tell you this to satisfy Article 14 GDPR, which applies where personal data is obtained from a source other than you directly.

4. Why we process it, and our legal basis

We process each category of data for a specific purpose with a specific lawful basis under Article 6 GDPR:

Data	Purpose	Lawful basis
Google account identifier + email	Create your account and let you sign in — providing the platform service to you	Performance of a contract — Art 6(1)(b)
Entitlement / purchase records + payment references	Record what you own; deliver and re-deliver entitlements; ensure a payment is fulfilled only once (idempotency)	Performance of a contract — Art 6(1)(b)
Checkout email + payment/subscription reference (purchases from us)	Deliver the license file or creator bundle you bought; fulfil each payment exactly once; keep a creator's publishing admission in step with the subscription	Performance of a contract — Art 6(1)(b)
Company name + billing contact email + license record (enterprise subscription)	Identify the licensee in the license file; deliver, renew, resize, and resume the license; send the notices and confirmation codes those flows require	Performance of a contract — Art 6(1)(b)
Free-trial email address	Deliver the trial license; enforce the one-free-trial-per-address limit	Performance of a contract — Art 6(1)(b); the one-trial limit rests on our legitimate interest — Art 6(1)(f)
Consulting-request details (name, email, company, message)	Respond to your request and scope the work you asked about	Pre-contractual steps at your request — Art 6(1)(b)
The same purchase / payment-reference records, once they form accounting records	Meet Swedish bookkeeping-law retention duties (see §6)	Legal obligation — Art 6(1)(c)
IP address / connection metadata in server logs	Operate and secure the platform servers and relay; prevent abuse	Legitimate interests — Art 6(1)(f)

Our legitimate interests. Where we rely on Article 6(1)(f), our interest is operating and securing the platform — keeping the servers and relay running, and preventing abuse and attacks. We process only the minimum connection data needed for that and keep it only briefly (see §6). You may object to this processing on grounds relating to your particular situation (see §8).

No reliance on consent for the core service. The platform runs on the contract, legal-obligation, and legitimate-interest bases above, and the site sets no non-essential cookies and uses only strictly necessary local storage (see §10). We do not rely on consent for any of the core processing, so there is generally no consent to withdraw. If we ever introduce a feature that does rely on your consent, we will ask for it separately and you will be able to withdraw it at any time, as easily as you gave it, without affecting prior lawful processing.

5. Who we share data with

We share personal data only with the parties needed to run the platform. We never sell your personal data.

Google — as the sign-in (identity) provider. Google returns your account identifier and email to us when you authenticate. Google's own processing is governed by Google's privacy policy.
Stripe — as the payment processor. Paid packages are sold creator-to-buyer using Stripe Connect direct charges, where the creator is the merchant of record for the sale. Stripe processes all card and payment data and stores it in its own secured systems; Shuusei AB never holds your card data and never holds buyer funds. For purchases where Shuusei AB itself is the seller — the DatumHue editions and the creator and enterprise subscriptions — Stripe processes the payment for us and passes us the checkout email, the payment reference, and (for enterprise) the company name we use for delivery and accounting (§3.4). Shuusei AB also receives a platform fee (15%) on each creator sale; the payment references we retain (see §6) relate to that fee revenue, which forms our own accounting records. Stripe acts as our processor for the data it handles on our instructions, and as an independent controller for its own purposes such as fraud detection and legal compliance, where it determines the purposes and means itself.
Hosting provider (Hetzner). Our platform infrastructure — the servers that run the backend and serve the marketing sites, the web client, and the purchase and license-management endpoints — is hosted on Hetzner Online GmbH, in the European Union (Germany). Hetzner processes technical connection data such as IP addresses in order to deliver traffic to you, and acts as our processor under a data-processing agreement. Because this infrastructure is in the EU/EEA, using the platform does not itself transfer your data outside the EU/EEA (see §7).
Creator package providers. By design, the authoritative record of a purchase lives with the creator who published the package, on the creator's package-provider node — not in a central Shuusei database. When you buy or install a creator's package, the creator's provider receives only the data needed to deliver that package to you (your entitlement and the delivery details for the purchased package). The creator's provider does not receive your Google account identifier or email — that identity data stays with us. The creator is responsible for the delivery data it holds under their own terms.
Consulting specialists. When you send us a consulting request (§3.5), we forward it — the name, email, company, and message you entered — to the independent consulting specialists who would carry out the work, so they can assess and answer it. They process your request to prepare that response; any engagement you then enter with them is governed by their own terms.

We may also disclose personal data where we are legally required to (for example, in response to a valid legal request), or to establish, exercise, or defend legal claims.

6. How long we keep it

Data	Retention
Account record (Google identifier + email)	Kept while your account is active; deleted on account closure, subject to the accounting-retention duty below
Purchase / sale records and payment references that form accounting records	Retained for approximately seven (7) years, as required by the Swedish Bookkeeping Act (Bokföringslagen, SFS 1999:1078)
Checkout email for deliveries (purchases from us)	Kept as long as needed to deliver and re-deliver what you bought; references that form accounting records follow the seven-year row above
Enterprise license record (company name, license identifier, size — held with the subscription at Stripe)	Kept while the subscription can renew or resume; parts that form accounting records follow the seven-year row above
Free-trial record (the email you gave, held with our payment processor)	Kept to enforce the one-free-trial-per-address limit
Consulting request (email correspondence)	Kept as long as needed to handle the request and any engagement that follows; parts that form accounting records follow the seven-year row above
IP address / connection metadata in server logs	Deleted or aggregated at the next scheduled log rotation, and in any event within thirty (30) days

The payment references we keep are the accounting records for the platform fee revenue described in §5. Because the seven-year accounting-retention duty is a legal obligation, we cannot delete records that fall under it before that period ends, even if you ask us to erase them or close your account (see §8).

7. International transfers

Our own platform infrastructure is operated within the EU/EEA — it is hosted on Hetzner Online GmbH in Germany (see §5) — so using the platform does not itself transfer your personal data outside the EU/EEA.

Two recipients, however, are based in the United States:

Google (sign-in) processes your identity data in the US.
Stripe (payments) processes payment data in the US.

These transfers are protected by the EU–US Data Privacy Framework, under which both Google and Stripe are certified, and by the European Commission's Standard Contractual Clauses as a fallback safeguard.

You can ask us for more information about these safeguards, and for a copy of the relevant clauses, by contacting privacy@datumhue.com.

8. Your rights

Under the GDPR you have the right to:

Access — obtain confirmation of whether we process your personal data and a copy of it.
Rectification — have inaccurate or incomplete data corrected.
Erasure — have your data deleted (the "right to be forgotten").
Restriction — have us limit how we process your data in certain circumstances.
Data portability — receive the data you provided in a structured, commonly used, machine-readable format, and have it transmitted to another controller where technically feasible.
Object — object to processing based on our legitimate interests (§4), on grounds relating to your particular situation.

Limits set by the law. The rights to erasure and to object do not extend to records we are legally required to keep — in particular the purchase and accounting records subject to the seven-year Bokföringslagen retention duty (§6). We can restrict processing of those records to storage-only until the retention period ends, but we cannot delete them before then.

To exercise any right, contact privacy@datumhue.com. We respond within the time limits set by the GDPR (normally one month). There is no charge for a reasonable request.

Right to complain. If you believe we have not handled your personal data lawfully, you may lodge a complaint with the Swedish supervisory authority:

Integritetsskyddsmyndigheten (IMY) — the Swedish Authority for Privacy Protection. Email: imy@imy.se · Website: imy.se

You may also complain to the supervisory authority in your EU/EEA country of residence.

9. Data your packages store on your device

DatumHue packages and apps can store data locally on your own device using the client's local storage (datumhue.storage) — backed by an on-disk store on desktop and by your browser's storage on the web.

That data stays on your device, under the terms of the package that created it. It is not transmitted to, collected by, or accessible to the Shuusei AB platform. Your entitlements to paid packages are likewise held on your device and verified offline — they are not stored in, or checked against, a central Shuusei database.

10. Cookies and local storage

We set no cookies of our own. The datumhue.app web client does not set any first-party cookies, and we do not use analytics, tracking, or advertising cookies or scripts of any kind. Because we set no non-essential cookies, no cookie-consent banner is required.

To run the workstation, the client stores data locally on your own device — in your browser's storage (IndexedDB and Web Storage) on the web, or in your local application-data folder in the desktop client. Every item below is strictly necessary for a feature you are using; none of it is transmitted to us, readable by us, or used to track you, and it stays isolated to DatumHue by your browser's same-origin rules or your operating system's file permissions.

What it stores	Purpose	Why it is kept
Sign-in tokens	Keep you signed in so you don't re-authenticate every visit	Present only after you sign in; needed for the sign-in you requested
Session identifier	Identify your current session and let you continue where you left off	Needed to run the workstation and the "continue last session" feature; a random value used only to operate the service, never to track you across sites
Document identity key	A private key that signs the documents you create and authorises what is shared with you; it stays on your device and is never transmitted to us	Needed to keep access to everything shared with you — losing it loses that access
Connection cache	Remember how to reach the platform's servers for faster startup	Operates the connection
Folder-access grants	Remember folders you explicitly granted a package access to, so you needn't re-pick them	Stored only when you grant access; saves re-granting
Offline license check	Let a licensed client start while offline	Needed for licensed and offline use
Package data	Data your installed packages save (see §9)	Saved at your installed packages' request
Terms acceptance (web)	Remember that you accepted the platform terms so you are not asked again on every visit	Set only after you accept; records which version you accepted, so you are asked again only when the terms change

Sign-in and payment happen on other companies' sites. When you sign in, the sign-in screen is served by Google on Google's own domain, where Google sets its own cookies under Google's privacy policy. When you buy a paid package, checkout is hosted by Stripe on Stripe's own domain, where Stripe sets its own cookies under Stripe's privacy policy. We do not set or read those cookies (see §5 and §7).

The marketing site (datumhue.com) and documentation (datumhue.dev) are static websites. They set no cookies and run no analytics or tracking. The marketing site stores a single item — your chosen colour theme — in your browser's local storage so the site remembers it between visits; nothing else is stored, and nothing is sent to us. Following a "Buy" or "Subscribe" link takes you to Stripe's hosted checkout, described above.

11. No automated decision-making

Shuusei AB does not carry out automated decision-making that produces legal effects concerning you or similarly significantly affects you, and we do not profile you. (Stripe may run its own fraud checks on a payment, as an independent controller, under Stripe's own policy — see §5 and §7.)

12. Is providing your data required?

Account identity. Providing your Google email and account identifier through sign-in is necessary to create an account and use the platform. Without it we cannot identify you or give you access — there is no account.
Purchase and payment data. These arise when you choose to buy a paid package. Once a sale exists, retaining its payment reference as an accounting record is a statutory obligation under Swedish bookkeeping law (§6); we cannot operate the sale without it.
Checkout email. The email you give at checkout is necessary to deliver an edition license file or creator bundle — without it we cannot deliver the purchase.
Company name (enterprise checkout). The company or organization name is necessary to issue the enterprise license — it names the licensee in the license file.

You are never required to provide more than this minimum.

13. Children

The platform is not directed at children. You must be at least 13 years old to use it, and if you are under 18 (the age of majority in Sweden) you may use the platform — and make any purchase — only with the involvement and consent of a parent or legal guardian. We do not knowingly collect personal data from children under 13. If you believe a child has provided us personal data, contact privacy@datumhue.com and we will delete it.

14. Creators

If you publish on the platform as a creator, we process, in addition to the account data above:

Your creator profile — the namespace assigned to you and the sign-in identity that holds it (§3.1), used to admit your package provider to the platform and attribute your packages. Lawful basis: performance of a contract — Art 6(1)(b).
Subscription and payout references. Your creator subscription is billed by Stripe, and sales of your paid packages settle to the Stripe Connect account you onboard. We hold the subscription reference, its payment status, and your connected-account identifier — never your card or bank details, which stay with Stripe. Lawful bases: performance of a contract — Art 6(1)(b) — and, once fee records become accounting records, legal obligation — Art 6(1)(c).
Delivery email. The email on your account is used to deliver your creator bundle and namespace credentials and for the notices described in the Creator Terms of Use. Lawful basis: performance of a contract — Art 6(1)(b).

Retention follows §6: records that become accounting records are kept for the statutory seven years; the rest lives with your creator account and is deleted when it closes. Your rights under §8 apply to this data in the same way. As the seller of your paid packages you also act as an independent controller of the delivery data your provider receives (§5.4) — that processing is governed by your own terms, not this policy.

15. Changes to this policy and to processing

We may update this policy. The governing version is identified by the Version line at the top of this document. If we make a material change, or if we intend to process your personal data for a new purpose not described here, we will inform you of that purpose and the relevant information beforehand, and — where the law requires it — obtain your consent before the new processing begins.

16. Contact

For any privacy question or to exercise a right: privacy@datumhue.com.

Postal mail may be addressed to Shuusei AB, Hällebergsgatan 36, 442 54 Ytterby, Sweden.

Victor Mono — SIL Open Font License 1.1

Copyright (c) 2024, Rune Bjørnerås (https://github.com/rubjo)

This Font Software is licensed under the SIL Open Font License, Version 1.1.
This license is copied below, and is also available with a FAQ at:
http://scripts.sil.org/OFL


-----------------------------------------------------------
SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
-----------------------------------------------------------

PREAMBLE
The goals of the Open Font License (OFL) are to stimulate worldwide
development of collaborative font projects, to support the font creation
efforts of academic and linguistic communities, and to provide a free and
open framework in which fonts may be shared and improved in partnership
with others.

The OFL allows the licensed fonts to be used, studied, modified and
redistributed freely as long as they are not sold by themselves. The
fonts, including any derivative works, can be bundled, embedded,
redistributed and/or sold with any software provided that any reserved
names are not used by derivative works. The fonts and derivatives,
however, cannot be released under any other type of license. The
requirement for fonts to remain under this license does not apply
to any document created using the fonts or their derivatives.

DEFINITIONS
"Font Software" refers to the set of files released by the Copyright
Holder(s) under this license and clearly marked as such. This may
include source files, build scripts and documentation.

"Reserved Font Name" refers to any names specified as such after the
copyright statement(s).

"Original Version" refers to the collection of Font Software components as
distributed by the Copyright Holder(s).

"Modified Version" refers to any derivative made by adding to, deleting,
or substituting -- in part or in whole -- any of the components of the
Original Version, by changing formats or by porting the Font Software to a
new environment.

"Author" refers to any designer, engineer, programmer, technical
writer or other person who contributed to the Font Software.

PERMISSION & CONDITIONS
Permission is hereby granted, free of charge, to any person obtaining
a copy of the Font Software, to use, study, copy, merge, embed, modify,
redistribute, and sell modified and unmodified copies of the Font
Software, subject to the following conditions:

1) Neither the Font Software nor any of its individual components,
in Original or Modified Versions, may be sold by itself.

2) Original or Modified Versions of the Font Software may be bundled,
redistributed and/or sold with any software, provided that each copy
contains the above copyright notice and this license. These can be
included either as stand-alone text files, human-readable headers or
in the appropriate machine-readable metadata fields within text or
binary files as long as those fields can be easily viewed by the user.

3) No Modified Version of the Font Software may use the Reserved Font
Name(s) unless explicit written permission is granted by the corresponding
Copyright Holder. This restriction only applies to the primary font name as
presented to the users.

4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
Software shall not be used to promote, endorse or advertise any
Modified Version, except to acknowledge the contribution(s) of the
Copyright Holder(s) and the Author(s) or with their explicit written
permission.

5) The Font Software, modified or unmodified, in part or in whole,
must be distributed entirely under this license, and must not be
distributed under any other license. The requirement for fonts to
remain under this license does not apply to any document created
using the Font Software.

TERMINATION
This license becomes null and void if any of the above conditions are
not met.

DISCLAIMER
THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
OTHER DEALINGS IN THE FONT SOFTWARE.

Browser client open-source notices: https://datumhue.app/THIRD-PARTY-LICENSES.txt

Licenses & terms

DatumHue Personal End-User License

0. Acceptance

1. The binary (datumhue executable)

1a. Grant — who may use the binary

1b. Updates — the update-window compact

1c. Permitted uses

1d. Reserved rights — what is not granted

1e. Your scripts and your data

1f. Termination

1g. Trial licenses

2. The manual (manual.html)

3. Warranty disclaimer

4. Refunds

5. Third-party components

6. Changes to this license

8. General terms

9. Governing law and contact

DatumHue Indie License

0. Acceptance

1. The workstation binary (datumhue executable)

1a. Grant — who may use the workstation binary

1b. Updates — the update-window compact

1c. Permitted uses

1d. Reserved rights — what is not granted

1e. Your scripts and your data

1f. Termination

2. The runtime binary (datumhue-runtime) — redistribution grant

2a. What you may redistribute

2b. Conditions

2c. Updates

3. The manual (manual.html)

4. Warranty disclaimer

5. Refunds

6. Third-party components

7. Changes to this license

8. General terms

10. Governing law and contact

DatumHue Platform Desktop Client License

0. Acceptance

1. The binary (datumhue platform desktop client)

1a. Grant — who may use the binary

1b. Always-latest — no update window

1c. Permitted uses

1d. Reserved rights — what is not granted

1e. Your scripts and your data

1f. Termination

2. The platform connection

3. Warranty disclaimer

4. Third-party components

5. Refunds

6. Changes to this license

7. General terms

8. Governing law and contact

DatumHue Enterprise License Agreement

0. Acceptance

1. Definitions

2. License grant

3. The license file — how the license is enforced

4. Subscription, size, and billing

5. Usage restrictions

6. Third-party components

7. Updates and new versions

8. Support

9. Your deployment and your data

10. Intellectual property and infringement defense

11. Limited warranty

12. Limitation of liability

13. Confidentiality

14. Term and termination

15. Force majeure

16. Changes to this agreement

17. General terms

18. Governing law and disputes

DatumHue Platform — Terms of Use

1. The platform and your account

2. Packages are third-party content

3. Buying paid packages

4. Buying from Shuusei AB

5. No maintenance or compatibility guarantee

1. The binary (`datumhue` executable)

2. The manual (`manual.html`)

1. The workstation binary (`datumhue` executable)

2. The runtime binary (`datumhue-runtime`) — redistribution grant

3. The manual (`manual.html`)

1. The binary (`datumhue` platform desktop client)