Legal

Privacy Policy

Last updated: August 9, 2026

Tangpusen Studios ("we", "our", or "us") built the Sudoku — A Quiet Puzzle app as a free app with optional in-app purchases. This page informs visitors about our policies regarding the collection, use, and disclosure of personal information.

Information we collect

We do not directly collect personal information. However, the app uses RevenueCat to process in-app purchases. RevenueCat may collect the following data to facilitate purchases and subscription management:

  • Device identifiers (e.g. Android advertising ID)
  • Purchase history and transaction data
  • App version and platform information
  • IP address

This data is collected and processed by RevenueCat in accordance with their Privacy Policy. We only receive anonymised purchase status data (e.g. whether a purchase was made) and do not have access to your payment details.

Data stored on your device

All game data — including your progress, streaks, point balance, and theme preferences — is stored locally on your device only. This data never leaves your device and is not accessible to us.

This data includes:

  • Active puzzle state and timer
  • Daily and monthly streak counts
  • Points balance and items (e.g. Streak Freeze)
  • Selected theme preference
  • Challenge mode progress

In-app purchases

The app offers optional in-app purchases processed through Google Play and managed via RevenueCat. We do not store or have access to your payment card details. All transactions are handled securely by Google Play.

Third-party services

The app uses the following third-party service:

We do not use advertising networks, analytics platforms, or any other third-party SDKs.

Children's privacy

Our app does not target anyone under the age of 13. We do not knowingly collect personally identifiable information from children under 13. RevenueCat's data collection is limited to purchase-related information and does not include data specifically from children.

Changes to this policy

We may update this Privacy Policy from time to time. Any changes will be reflected on this page with an updated date. We encourage you to review this page periodically.

Contact us

If you have any questions about this Privacy Policy, please contact us at admin@tangpusenstudios.com.