Privacy Policy
Last updated: October 2026. Short version: the app works without an account, we collect the minimum needed to run it, and we never sell your data.
1. Data we collect
- Account (optional). If you sign in: your email address and display name.
- Quiz activity. Drills stay on your device unless you sign in, in which case scores sync to your account and leaderboard entries show your display name and score.
- Notifications (optional). If you allow them: a device push token and timezone offset, used for streak and leaderboard alerts.
- Purchases. Subscription status via RevenueCat. Card numbers go to Apple or Google only — we never see them.
- Ads (free tier). Google AdMob may use device identifiers to serve and measure ads. Premium removes ads entirely.
2. How we use it
To run the service: quizzes, synced scores, leaderboards, streak reminders, purchase status, and ads on the free tier. We use aggregated, de-identified stats to improve the question bank.
3. Sharing
Your data goes only to the processors that run the app: our backend, RevenueCat (purchases), Google (AdMob ads, Firebase push delivery), and Apple or Google (payments). We do not sell personal data, and leaderboard display names are the only account data other users can see.
4. Retention & deletion
On-device history can be cleared anytime in the app (Scores → Clear).
To delete your account and its synced scores, contact us through the support link on the app's store listing and we will remove them.
5. Children
The app is a study tool that students may use. We do not knowingly collect data from children under 13 without parental consent; parents or guardians can request review or deletion of a child's data through the support link on the app's store listing.
6. Changes
We may update this policy as the app evolves and will note the new date above. Continued use after an update means you accept the new policy.