Privacy

v1 stores all your data locally in your browser. Nothing is sent to a server. Bookmarks, attempts, and preferences live in localStorage.

Anonymous usage analytics (mode selection, question answered, theme changed) are sent to a self-hosted PostHog instance in the EU when analytics are enabled. Event payloads never include personally identifiable information.

Future versions will introduce optional Google sign-in for cross-device sync. That feature is not active in v1.