Privacy Policy

Last updated: May 16, 2026

Yushan doesn't collect any of your data. No analytics, no tracking, no accounts, nothing. Everything stays on your device.

What data do I collect?

None. The app doesn't collect, store, or send any personal information. Your learning progress lives on your phone and nowhere else.

Third-party services

The app uses Google Play Billing to process one-time purchases. Transactions are handled entirely by Google, which has its own privacy policy. The app itself does not collect or store any payment information.

Kids

Since the app collects zero data, it's safe for users of all ages, including children under 13.

Changes

If I ever update this policy, I'll post the new version here with a new date.

Contact

You can reach me at yushan@nicolasjaussaud.me.