Terms of Service

Last updated: 2026-06-16

These Terms of Service ("Terms") govern your use of Isometra ("the service"). By creating an account or using the service, you agree to these Terms. If you don't agree, don't use the service.

1. The service

Isometra is a 5E-compatible virtual tabletop for in-person and online tabletop roleplaying. It helps you run campaigns, build characters, manage sessions, and chat with optional AI personas. The service offers a free tier plus optional paid subscriptions and one-time AI-credit purchases (see Section 6), and is intended for personal, non-commercial play. The service is provided as-is; features may change, be added, or be removed at any time.

Isometra renders rules content from one or more publicly licensed System Reference Documents (see Licensing & Attribution for the canonical attribution statement and license terms). Isometra is independent and is not produced, sponsored, endorsed by, or otherwise affiliated with the publishers of any roleplaying game system. Third-party trademarks remain the property of their respective owners; their occasional appearance in user-authored content (campaign names, character backstories, etc.) is the responsibility of the user under section 4 of these Terms.

2. Eligibility and accounts

You must be at least 13 years old to use the service. If you are between 13 and the age of majority in your jurisdiction, you confirm you have your parent or guardian's permission.
You must provide accurate information when creating an account.
You are responsible for keeping your sign-in credentials secure. Don't share your account.
One account per person. Don't impersonate others.

3. Acceptable use

You agree NOT to:

Use the service for any unlawful purpose, or to violate the rights of others.
Upload, post, or share content that is illegal, abusive, harassing, defamatory, sexually explicit involving minors, or that infringes the intellectual property of others.
Attempt to break, probe, or interfere with the service's security, scrape it at scale, or use automated tools to overload it.
Reverse-engineer the service except as expressly permitted by applicable law.
Use the service to generate content that violates third-party platform policies — for example, prompting our AI features to produce content that violates Anthropic's Usage Policy or Google's generative-AI terms.
Resell, rent, or sublicense access to the service.

Audio feature — acceptable use

Isometra includes a curated in-app audio library (ambient music and sound effects) for use during your sessions. In addition to the general rules above, you agree NOT to:

Extract, scrape, download in bulk, or otherwise harvest the audio library or any clip from it for use outside Isometra.
Redistribute, rehost, resell, or sublicense the audio library or any clip, whether modified or not.
Circumvent any technical or contractual access controls on the audio library.
Represent the audio content as your own original work or strip its provenance/attribution.

Playing clips inside a live Isometra session is fine and expected; the library is provided for in-app use only. See "Third-Party Audio Content" in Section 4 for the underlying licenses.

We may, at our discretion, remove content or suspend accounts that violate these rules.

4. Content and licensing

Your content

You retain all rights to the campaigns, characters, NPCs, homebrew rules, and other content you create in Isometra ("Your Content").

By submitting Your Content to the service, you grant Isometra a worldwide, non-exclusive, royalty-free license to host, store, reproduce, display, and distribute Your Content as needed to operate the service (e.g. rendering it back to you, sharing it with collaborators you invite, processing it through our AI sub-processors when you use AI features).

Public/Discover content

If you publish a campaign to Discover, you additionally grant other Isometra users a license to view and fork that content, with attribution back to you preserved by the platform. You can unpublish at any time, but existing forks remain independent works (see Privacy Policy section 6).

Forking and attribution

When you fork another user's published campaign, you accept that:

The fork is your own copy; you may modify it freely for your private play.
The original creator's attribution is preserved on the fork in our system.
Mass redistribution of forked content outside Isometra is your responsibility under applicable law.

Third-party SRD content

Isometra renders rules text from public SRD documents (currently SRD 5.1 and SRD 5.2.1) under the Creative Commons Attribution 4.0 International License. SRD content is not Your Content; it remains under its original license. See /about/licensing for full attribution and license details.

Third-Party Audio Content

The in-app audio library (ambient music and sound effects) is not Your Content and is not owned by Isometra. Each clip is licensed from third parties under Creative Commons CC0 1.0 ("CC0"), Creative Commons Attribution ("CC-BY" 3.0 or 4.0), or is in the public domain, and remains under its original license. The full per-clip provenance — author, source, license, and (for CC-BY) the required attribution — is published on the Audio Credits page.

The audio library is provided "as is" and "as available," without warranty of any kind. We curate for license cleanliness on a best-effort basis but do not guarantee that any clip is free of third-party claims.
You may use the audio within Isometra sessions in accordance with the applicable clip license. You receive no ownership of, and no license to, the underlying audio beyond such in-app use.
You may NOT extract, scrape, bulk-download, rehost, redistribute, resell, or sublicense the audio library or any clip outside the service. This restriction is in addition to — and does not enlarge — the rights granted by the underlying CC0 / CC-BY / public-domain licenses; where those licenses grant you broader rights to a clip obtained from its original source, those rights are unaffected, but Isometra grants no separate right to redistribute the library as assembled here.
We may add, remove, replace, or disable clips at any time.

User Content & Copyright (DMCA)

Not yet enabled. User-uploaded audio (and other user-uploaded media) is not currently a feature of Isometra. This framework is drafted in advance and governs such uploads if and when that feature is enabled. Until then, only the curated library described above is available, and the notice-and-takedown procedure below applies to it on a best-effort basis.

Isometra respects the intellectual property rights of others and expects its users to do the same. We respond to clear notices of alleged copyright infringement consistent with the U.S. Digital Millennium Copyright Act ("DMCA") and comparable laws.

Designated agent. Copyright notices should be sent to our designated agent:

Designated Copyright Agent: [Placeholder — to be designated upon enabling user uploads]
Email: zwchristie@gmail.com
Subject line: "Isometra DMCA Notice"

Notice-and-takedown. A valid notice should include: (1) your physical or electronic signature; (2) identification of the copyrighted work claimed to be infringed; (3) identification of the allegedly infringing material and information reasonably sufficient to let us locate it (e.g. a link or clip identifier); (4) your contact information; (5) a statement that you have a good-faith belief the use is not authorized by the copyright owner, its agent, or the law; and (6) a statement, under penalty of perjury, that the information is accurate and that you are the owner or authorized to act on the owner's behalf. On receipt of a valid notice, we will remove or disable access to the identified material expeditiously.

Counter-notice. If you believe material was removed in error, you may submit a counter-notice to the same contact with: (1) your signature; (2) identification of the removed material and its prior location; (3) a statement under penalty of perjury that you have a good-faith belief the material was removed by mistake or misidentification; and (4) your contact information and consent to the jurisdiction of the appropriate court. We may restore the material as permitted by law.

Repeat infringers. We will, in appropriate circumstances and at our discretion, terminate the accounts of users who are determined to be repeat infringers.

AI-generated content

Content generated by the in-app AI personas (Loremaster, Lyra) and AI helpers (NPC suggestions, portraits, session summaries) is yours to use within the service for your campaign. You are responsible for verifying its accuracy and ensuring its use complies with the AI provider's terms (Anthropic Usage Policy, Google's gen-AI terms via Vercel AI Gateway).

5. AI features

The AI features are provided "as-is." AI personas can produce inaccurate or out-of-character responses. Treat their output as a draft suggestion, not a substitute for the rulebook or your own judgment as a DM/player. We are not liable for in-game decisions based on AI output.

6. Subscriptions, credits, and payment

Isometra offers a free tier and optional paid plans. Paid subscriptions and one-time AI-credit top-ups are billed through our payment processor, Stripe. Your card details are entered on Stripe's hosted checkout and are never stored on our servers.

Auto-renewal. Subscriptions renew automatically each billing period (monthly) at the price shown at checkout until you cancel. By subscribing, you authorize us, via Stripe, to charge your payment method on each renewal.
Cancellation. You can cancel anytime from your account billing settings or the Stripe customer portal. Cancellation stops future renewals; your paid features stay active until the end of the period you've already paid for. We don't provide prorated refunds for the unused part of a billing period, except where required by law.
Credits. Paid subscriptions include a monthly allotment of AI credits that refresh each billing period and do not roll over. AI-credit top-ups are one-time purchases that remain on your account until used; purchased credits are non-refundable once used.
Failed payments. If a renewal payment fails, we may retry it and, if it keeps failing, downgrade your account to the free tier; paid features become unavailable until billing is restored.
Price changes. We may change prices or plan features. We'll give notice before a change affects your next renewal; the new price applies only from your next billing period, and you can cancel before it takes effect.
Taxes. Prices exclude any applicable taxes unless stated otherwise; you're responsible for taxes associated with your purchase.
Your statutory rights. Nothing in this section limits any non-waivable refund or withdrawal rights you have under your local consumer-protection law.

7. Termination

By you: delete your account at any time from Settings. See the Privacy Policy for what happens to your data.
By us: we may suspend or terminate your account if you materially breach these Terms (e.g. repeated abuse, illegal use, security violations). Where reasonable and lawful, we will notify you and give you a chance to remediate.

These Terms survive termination to the extent needed to enforce remaining rights and obligations.

8. Disclaimers

The service is provided "as-is" and "as-available," without warranties of any kind, express or implied, including merchantability, fitness for a particular purpose, and non-infringement. We do not guarantee that the service will be uninterrupted, error-free, or that AI output will be accurate.

You use the service at your own risk.

9. Limitation of liability

To the maximum extent permitted by law, Isometra and its operators are not liable for indirect, incidental, special, consequential, or punitive damages, or loss of profits, revenue, data, goodwill, or other intangible losses, arising out of or related to your use of the service. Our aggregate liability for direct damages is limited to USD 100 or the amount you paid us in the prior 12 months, whichever is greater.

Some jurisdictions don't allow these limitations; in those places, our liability is limited to the maximum extent permitted by law.

10. Indemnification

You agree to defend and indemnify Isometra and its operators against claims arising from Your Content or your breach of these Terms, to the extent permitted by law.

11. Changes to these Terms

When we change these Terms materially, we will update the "Last updated" date and surface a notice in the app. Continued use after the effective date constitutes acceptance.

12. Governing law

These Terms are governed by the laws of the State of Texas, United States of America, without regard to conflict-of-laws principles. Disputes will be resolved in the courts located in the State of Texas, except where mandatory consumer-protection law gives you the right to bring claims locally.

13. Miscellaneous

If any provision of these Terms is unenforceable, the rest stays in effect.
We may assign these Terms in connection with a merger, acquisition, or sale; we will notify you if we do.
These Terms are the entire agreement between you and us regarding the service.

14. Contact

Questions about these Terms?

Email: zwchristie@gmail.com
Subject line: "Isometra Terms"

See also: Privacy Policy — Licensing & Attribution.