Terms of Service

Subtitle Tutor is a personal, open-source project. Support and legal contact: [email protected].

You must be at least 13 years old (16 in the EU or EEA) to use the Service. By registering you confirm you meet that minimum age and have the right to enter into these Terms.

• You are responsible for the security of your password and any AI provider keys you save to your account.
• You are responsible for everything that happens under your account.
• Tell us promptly if you suspect unauthorized access. You can invalidate every active session from Settings (“log out everywhere”) or by changing your password.
• One account per person. Do not share credentials.

You agree not to:

• Use the Service to break the law or to violate someone else’s rights.
• Capture subtitles or other material in violation of the source platform’s terms of service or applicable copyright law.
• Try to reverse engineer, scrape, or overload the Service.
• Disable, bypass, or attempt to defeat any security feature (rate limits, encryption, authentication).
• Submit content that is illegal, defamatory, harassing, or that promotes hate or violence.
• Resell, sublicense, or commercialize the Service without written permission.
• Run automated workloads that exceed normal personal study volumes. The per-user rate limits are not invitations to script around them.

We may suspend or terminate accounts that violate these rules, at our discretion, with or without notice.

You retain ownership of the subtitle text you capture, the words you pick, and any notes you store (“Your Content”). You grant Subtitle Tutor a non-exclusive, worldwide, royalty-free license to host, store, transmit, and process Your Content solelyfor the purpose of operating the Service for you — for example sending a phrase to your selected AI provider to generate the lesson you requested, persisting it in your library, and displaying it back to you.

You are responsible for ensuring that capturing and storing the content does not violate the rights of any third party (including the original creator of the subtitled material). The Service is designed for personal language study; it is not licensed for redistribution, republishing, or commercial reuse of captured material.

• Lessons, translations, glossaries, and definitions are generated by third-party AI, translation, and dictionary providers. We do not fact-check them.
• AI output can be wrong, incomplete, biased, or out of date. Do not rely on it for medical, legal, financial, safety-critical, or academic-attribution decisions.
• The license terms of the AI provider you select may impose additional restrictions on what you can do with the output. Review them.

The Service depends on third-party services (AI providers, translation engines, dictionary APIs, Firebase). Your use of those services through Subtitle Tutor is also governed by their terms. Outages, rate limits, deprecations, or price changes from those providers can affect the Service, and we are not responsible for those external changes.

The hosted Service is currently provided free of charge. If we ever introduce paid tiers we will give you notice and an opportunity to choose before any charge applies.

Costs you incur with your own AI provider account (for example OpenAI or Anthropic API usage) are yours; we do not see, control, or refund them.

The Service is offered on an “as is” and “as available” basis. We do not guarantee uptime, error-free operation, or that any specific feature, AI provider, dictionary, or translation engine will keep working. We may modify, suspend, or discontinue any part of the Service at any time.

Parts of the Service are open source. The license shipped in the repository (see the repository’s LICENSE file, if any) governs your right to fork or self-host the source code. These Terms govern your use of any hosted instance we operate; they do not restrict your separately-licensed open-source rights.

To the maximum extent permitted by law, the Service is provided without warranties of any kind, express or implied, including warranties of merchantability, fitness for a particular purpose, non-infringement, and any warranty arising out of course of dealing or usage. We make no warranty that the Service will meet your requirements, be uninterrupted, or be secure.

To the maximum extent permitted by law, in no event will Subtitle Tutor, its maintainers, or its contributors be liable for any indirect, incidental, special, consequential, or punitive damages, or any loss of profits, revenues, data, use, goodwill, or other intangible losses, resulting from (a) your use or inability to use the Service; (b) any conduct or content of any third party on the Service; or (c) unauthorized access, use, or alteration of Your Content.

In all cases our aggregate liability is limited to the lesser of (i) USD 100 or (ii) the fees you paid us (if any) in the prior 12 months.

Some jurisdictions do not allow these exclusions; in that case the exclusions apply to the maximum extent permitted.

You agree to indemnify and hold harmless Subtitle Tutor and its contributors from any claim, liability, or expense (including reasonable legal fees) arising from (a) your violation of these Terms; (b) Your Content; or (c) your misuse of the Service.

You may delete your account at any time from Settings or by emailing us. We may suspend or terminate your access if you violate these Terms or if continuing to operate the Service creates legal or operational risk. On termination, sections 5 (license to remove), 6 (output disclaimers), 11–13 (warranty, liability, indemnity), and 16 (governing law and disputes) survive.

We may update these Terms. Material changes will be reflected by updating the “Last updated” date at the top. If you continue to use the Service after that date, you accept the revised Terms.

These Terms apply regardless of where you use the Service. Because Subtitle Tutor is a personal project without a designated jurisdictional seat, you and we agree to first attempt to resolve any dispute informally by email, in good faith, for at least 60 days before escalating to formal proceedings. To the extent a court must decide, you and we each waive the right to a jury trial where lawful.

Nothing in this section limits any non-waivable consumer rights you have under the mandatory law of your country of residence.

Questions about these Terms: [email protected].