← Back to LLM Master
LLM Master
Privacy Policy
Last updated: 2026-05-17
LLM Master collects no personal information beyond an anonymous device ID used for learning progress and bookmarks.
No name, email, or phone collected. No ad tracking.
1. Information We Collect
- Anonymous device ID — A random UUID is generated at install time to store your learning progress and bookmarks. We do not collect name, email, phone, or any other personally identifiable information.
- Learning activity — Which lessons you started/completed, quiz scores, AI tutor queries (used for service quality improvement and token-usage measurement).
- API usage metadata — Token counts and call timestamps (for cost monitoring and daily-quota enforcement). Conversation content itself is not retained long-term.
2. Third-Party Processing
Text is sent to the Anthropic Claude API to generate tutor responses, lesson bodies, and quizzes.
We follow Anthropic's data-retention policy (ZDR applies where available).
3. Storage Location and Retention
- Progress, bookmarks, and tutor conversation logs are stored in SQLite on a Railway-hosted server.
- All data is keyed by device ID. When you delete the app, the device ID is permanently lost (a fresh install gets a new ID).
4. Your Rights
For deletion or access requests, email us below with your device ID.
5. Payment Information
Paid features (app purchase & subscriptions) are processed via Apple StoreKit. We do not collect or store payment information.
Apple's privacy policy applies.
6. Changes
Material changes will be announced in-app.
7. Contact