Privacy policy

Last updated: 2026

We collect the minimum data needed to run your account and improve your study experience.

What we store

• Account details: name, email, hashed password, avatar and preferences.
• Learning data: attempts, answers, bookmarks, notes, stars and analytics.
• Billing records for simulated and future subscriptions.
• Security logs: sign-in events, sessions, IP and user-agent.

What we never store

Exam questions are served from a private GitHub dataset at request time and are never copied into our application database.

Your rights

You can export or delete your data at any time from Settings → Data & account.

Third parties

We use MongoDB Atlas for application data, GitHub for the question dataset, and an optional AI provider for explanations. Secrets are managed with Doppler and never committed to source control.