This policy describes how the app stores game state locally on the device, when data may be transmitted to Google services, and how the planned ad and billing flows are handled.
Drafted to align with Play Console Data Safety and AdMob publisher requirements; legal review is still recommended before production release.
`#DailySudoku` (the "app") is an offline Sudoku game for smartphones.
The app does not require account sign-up, and user progress, settings, and statistics are stored by default only on the user device. Only the data described in §2 may be transmitted to third-party servers through Google AdMob / UMP SDK integrations.
The app keeps local gameplay data inside the device sandbox and does not access that data outside the device. Third-party collection applies only to the Google services described below.
| Category | Examples | Retention | Storage |
|---|---|---|---|
| Gameplay state | Current puzzle, timer, mistake/hint counters, notes | Until a new game starts | DataStore Preferences |
| Settings | Theme, accent color, language, last difficulty | Until the app is deleted | DataStore Preferences |
| Completion history | Difficulty, solve time, score, completion date | Until the app is deleted | Room (SQLite) |
| Daily status | Today-completed epochDay, score, solve time | Until local-timezone midnight boundary | DataStore Preferences |
Local data stays inside the app sandbox on the device. We do not access that data remotely.
Google AdMob serves banner advertising and may collect Android Advertising ID, device information, approximate geography, network/IP address, and ad interaction events.
Google User Messaging Platform (UMP) is used to determine whether a consent form is required for the user region and to record the resulting consent choice.
The Google Play Billing Library is planned for the ad removal purchase flow in Phase 8 and later.
The billing flow may process purchase history, transaction identifiers, and Google account email for receipt and refund routing, but those details are handled by Google and are not stored by the app.
Data described in §2.2 may be transmitted to Google LLC in Mountain View, CA, USA for ad serving, consent management, and in-app billing.
No other third party receives or is sold user data by the app.
The app is not designed for children under 13.
UMP SDK calls default to `setTagForUnderAgeOfConsent(false)`. If a child uses the app, the guardian should disable ad personalization in device settings.
If this policy changes, the effective date will be updated and the latest version will remain available through the privacy policy link in app settings.
Major changes, such as adding a new SDK or expanding the data categories, will also be announced in the app.
This policy follows the Google Play Store Data Safety declaration and AdMob publisher requirements as of 2026-04. Localization and legal refinement for EEA, UK, CH, US, and KR jurisdictions is still pending.