Privacy Policy

Clean Sudoku – Offline Solver

Last updated: April 5, 2026

Introduction

Clean Sudoku – Offline Solver ("we", "our", "the app") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and share information when you use our mobile application.

Information We Collect

Information Collected Automatically

  • •Analytics Data: We use Firebase Analytics to collect anonymous usage data such as app opens, session duration, and feature usage. This helps us improve the app experience.
  • •Advertising Data: We use Google AdMob to display ads. AdMob may collect device identifiers, IP address, and usage data to serve personalized or non-personalized ads. For more details, see Google's Privacy Policy.
  • •Device Information: Basic device information such as device model, operating system version, and language settings may be collected through our third-party services.

Information We Do NOT Collect

  • We do not collect your name, email address, or any personal contact information.
  • We do not require account creation or login.
  • We do not collect location data.
  • We do not access your contacts, messages, or phone data.
  • Game data (progress, settings, leaderboard scores) is stored locally on your device only and is not transmitted to any server.

Camera Permission

The app requests camera access solely for the Sudoku image scanning feature, which uses on-device ML processing. Images captured are processed locally and are not uploaded, stored, or shared with any server or third party.

Third-Party Services

The app uses the following third-party services, each with their own privacy policies:

ServicePurposePrivacy Policy
Google AdMobAdvertisingLink
Firebase AnalyticsUsage analyticsLink
Google ML KitOn-device image recognitionLink

Children's Privacy

The app is not directed at children under 13. We do not knowingly collect personal information from children. If you believe a child has provided us with personal data, please contact us so we can delete it.

Ad Choices

Google AdMob may serve personalized ads based on your interests. You can opt out of personalized advertising by:

Android:Go to Settings > Google > Ads > Opt out of Ads Personalization

Data Retention

Since we do not collect personal data directly, there is no personal data retained on our servers. All game data is stored locally on your device and can be cleared by uninstalling the app or clearing app data.

Changes to This Policy

We may update this Privacy Policy from time to time. Any changes will be reflected by updating the "Last updated" date above. Continued use of the app after changes constitutes acceptance of the updated policy.

Contact Us

If you have any questions about this Privacy Policy, please contact us at:

Email: contact@fishtailgames.com

Developer: Fishtail Games

This privacy policy is effective as of April 5, 2026.

This app is developed by Fishtail Games.