OSDev AppsPrivacy Policy
SudokuOS Last updated: March 2026
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1. Introduction
Welcome to SudokuOS. We respect your privacy and are committed to being transparent about how our app works. This Privacy Policy explains what data is collected, how it is used, and your rights as a user.
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2. Information We Collect
2.1 Data You Provide
SudokuOS does not require account registration. No name, email address, or personal identification is collected directly by us.
2.2 Automatically Collected Data
Analytics (Firebase Analytics) We use Firebase Analytics to understand how players interact with the app. This may include:
- App usage events (e.g. game started, difficulty selected)
- Device type and operating system version
- Country/region (aggregated)
- Session duration
This data is anonymised and used solely to improve the game experience.
Crash Reporting (Firebase Crashlytics) If the app crashes, Crashlytics automatically collects crash logs to help us diagnose and fix issues. This may include device model, OS version, and the state of the app at the time of the crash. No personally identifiable information is included.
Advertising (Google AdMob) SudokuOS displays ads through Google AdMob. AdMob may collect and use data to serve personalised or non-personalised ads, including:
- Device identifiers (e.g. advertising ID)
- IP address
- Approximate location
- Interaction with ads
For more information on how Google uses this data, please visit: https://policies.google.com/privacy
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3. Rewarded Ads
SudokuOS offers optional rewarded ads that allow you to earn in-game benefits (hints or hearts). Watching these ads is entirely voluntary. The reward granted is determined solely by the AdMob reward configuration — no additional reward is given by the app beyond what AdMob specifies.
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4. Data Storage
Game progress (your current puzzle, stats, and settings) is stored locally on your device using on-device storage. This data never leaves your device and is not accessible to us.
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5. Children's Privacy
SudokuOS is suitable for general audiences. We do not knowingly collect personal information from children under 13. If you believe a child has provided personal data through the app, please contact us so we can take appropriate action.
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6. Third-Party Services
SudokuOS integrates the following third-party services, each governed by their own privacy policies:
| Service | Purpose | Privacy Policy | |---|---|---| | Google AdMob | Advertising | https://policies.google.com/privacy | | Firebase Analytics | Usage analytics | https://firebase.google.com/support/privacy | | Firebase Crashlytics | Crash reporting | https://firebase.google.com/support/privacy |
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7. Your Rights
Depending on your location, you may have rights regarding your data, including:
- The right to access information collected about you
- The right to request deletion of your data
- The right to opt out of personalised advertising
To opt out of personalised ads on your device:
- Android: Settings → Google → Ads → Opt out of Ads Personalization
- iOS: Settings → Privacy → Tracking → disable for SudokuOS
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8. Changes to This Policy
We may update this Privacy Policy from time to time. Any changes will be reflected with a new "Last updated" date at the top of this page. Continued use of the app after changes are posted constitutes your acceptance of the updated policy.
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9. Contact Us
If you have any questions or concerns about this Privacy Policy, please contact us at: