Terms of Service
Last updated: 2026-05-10
These are the simple terms for using Polyglot. They're written in plain English on purpose. By signing into the app, you agree to these terms. If you don't agree, please don't use the app.
1. What Polyglot is
Polyglot is an AI-powered German learning application currently in invite-only beta, operated by Gustavo Cabrera, an individual developer. We provide structured lessons, real-time AI conversation, and tests to help you learn German.
We are not a school, certified language institution, or test-administering body. Polyglot's lessons are inspired by the Goethe-Zertifikat curriculum but Polyglot is not affiliated with the Goethe-Institut, TestDaF, telc, or any official German-language testing organization.
2. Beta status
Polyglot is in invite-only beta. This means:
- Features may change, break, or be removed without notice.
- Your access can be revoked at any time, especially if your email is no longer in our allowlist.
- The app is provided "as is" with no guarantees of uptime, accuracy, or fitness for any particular purpose.
- It's free during beta. We reserve the right to introduce paid plans before opening to the public; we'll notify you before any change to your access.
3. What you agree to do (and not do)
You agree to use Polyglot for personal language learning. You agree NOT to:
- Try to break, abuse, or extract data from the AI endpoints (chat, voice, grammar generation, etc.). Per-user rate limits are in place; circumventing them is grounds for revoking access.
- Attempt to access other users' accounts or data.
- Reverse-engineer, scrape, or redistribute the curriculum content (lessons, theory, exercises) — they're our original work.
- Use the AI tutor to generate content unrelated to language learning, especially anything illegal, harmful, or designed to evade our content moderation.
- Share your account credentials. Each invited beta tester gets one personal login.
4. Content ownership
The lesson content (text, exercises, theory blocks) is original work owned by Polyglot and licensed for your personal, non-commercial study only. The names "Polyglot" and "Frau Schmidt" (the AI tutor character) are placeholders for the beta and may change.
You retain rights to anything you write to the AI tutor (chat messages, etc.). By submitting content to the AI, you grant us a limited license to process it through our AI providers (OpenAI, Cloudflare Workers AI) for the sole purpose of producing a response.
5. AI-generated content disclaimer
Polyglot uses AI models for the chat tutor, grammar exercises, reading passages, and voice conversation. AI models can make mistakes — they sometimes generate grammatically incorrect German, factually wrong cultural information, or plain nonsense. Treat AI-generated content as practice, not as ground truth. For exam preparation, cross-reference with official Goethe-Institut materials.
6. AI moderation
Chat messages are passed through an automated moderation step. If your message or the model's response is flagged as unsafe (illegal content, harmful instructions, sexual content involving minors, etc.), the response is replaced with a polite refusal. False positives are possible; if a clearly innocuous message gets refused, email us at hello@polyglot.app and we'll look at it.
7. Voice calls and costs
Real-time voice conversations route through OpenAI's Realtime API, which has a per-minute cost to us. To prevent runaway usage:
- Each voice session is hard-capped at 10 minutes by the app.
- Each user has a daily limit of 10 minutes of cumulative voice time and 10 sessions per day.
- If we discover abuse (sessions left running unattended, automated invocation, etc.), we'll revoke access to the voice feature without notice.
8. Termination
You can delete your account at any time from the Profile tab. We can revoke your access at any time, especially for violations of section 3 or for any reason at our sole discretion during the beta. If we revoke your access for cause, we may keep aggregate logs of the violation. Otherwise, account deletion removes all your personal data within a few days.
9. Liability
To the maximum extent permitted by law, Polyglot is provided "as is" with no warranties. We're not liable for:
- Errors in lesson content or AI-generated material.
- Lost progress due to bugs, account deletion, or service downtime.
- Any consequence of failing a real-world German exam after using Polyglot. The app supplements but does not replace formal instruction.
- Indirect, incidental, special, or consequential damages.
Our total liability to you for any claim relating to Polyglot is limited to the amount you have paid us in the past 12 months — which during beta is $0.
10. Changes to these terms
If we change anything material, we'll email you using the address on your Google account before the change takes effect. Continued use after a change means you accept the new terms. If you don't, please delete your account.
11. Governing law
These terms are governed by the laws of the jurisdiction where Polyglot's operator (Gustavo Cabrera) is currently resident. Any disputes go to that jurisdiction's courts. We're a small project; if something is wrong, please email us first — we want to fix it, not litigate.
12. Contact
Questions about these terms: hello@polyglot.app.