Sudoku Atlas — Last updated June 2026
Sudoku Atlas does not collect, transmit, or share any personal information. All puzzle progress, settings, and statistics are stored locally on your device and never leave it.
The app makes no network requests. There are no analytics, advertising, or crash-reporting services.
The one-time unlock purchase is processed entirely by the App Store (on iOS) or Google Play (on Android), depending on where you bought the app. We never see your payment details. The store's own privacy policy applies to that transaction.
Questions? sudokuatlas@proton.me