PuzzleRook Privacy Policy

Last Updated: October 31, 2026

1. Overview

PuzzleRook: Chess Puzzles (hereinafter referred to as "the App") is an offline chess puzzle trainer. This policy explains what information the App handles and how it is used.

2. Information We Collect

The App does not collect, transmit, or share any personal information. It has no account system, no advertising, no analytics, no crash reporting, and no third-party SDKs.

3. Data Stored on Your Device

Your training progress is stored only on your device, in the App's own sandbox. This includes:

  • Your puzzle rating and rating history
  • Solved puzzles, mistakes awaiting review, and favorites
  • Settings such as board color, sound, and haptics

This data never leaves your device. Deleting the App removes it, or you can reset all progress from the Settings screen.

4. Network Access

The App works fully offline and does not make network requests. Puzzles are bundled with the App.

5. Third-Party Content

The puzzles come from the Lichess open puzzle database, which is released under the Creative Commons CC0 license. Chess piece artwork is used under its respective license. No personal information is shared with Lichess or any other party.

6. Children's Privacy

The App does not collect personal information from anyone, including children under 13, and is suitable for all ages.

7. Data Security

Because your progress is stored only on your device, its security depends on your device's own protections, such as passcode and device encryption.

8. Policy Updates

We may update this privacy policy from time to time. Changes will be posted on this page with a new "Last Updated" date.

9. Contact Us

For privacy-related questions, please contact:

Email: [email protected]

By using PuzzleRook, you agree to this privacy policy.