Privacy Policy

Account details (name, email, optional date of birth), study content (courses, decks, cards, progress), session statistics, and preferences (language, study settings). If you sign in with Google, we store your Google account identifier.

To authenticate you, sync your library across devices, schedule reviews, and show progress. We do not sell your personal data.

Data remains until you delete content or your account. Account deletion removes your courses, decks, cards, and progress.

You can export your data from Account settings and delete your account at any time.

We use essential cookies to keep you signed in and protect against cross-site request forgery. These are required for the service and cannot be turned off. With your consent, we also load privacy-friendly analytics (Plausible) to understand how the app is used—no advertising trackers. You can allow or decline analytics in the cookie settings dialog on first visit, from the footer link Cookie settings, or from Account → Privacy & cookies.