Quick answer
A clean Sudoku app with logic-based difficulty and helpful assists
F-Droid repository metadata
A clean Sudoku app built with Flutter. Every puzzle is uniquely generated, and its difficulty is derived from the logical solving techniques required to complete it.
Features:
* Logic-based difficulty - difficulty is derived from the techniques needed to solve a puzzle (Hidden Single, Naked Pair, X-Wing, Swordfish, and more).
* In-game assists - notes/pencil marks, auto-notes, undo, conflict highlighting, and validation.
* Statistics & leaderboard - track your solve times per difficulty, with a top-10 board shown on the solved overlay.
* Resume - your current game is saved locally so you can continue right where you left off.
* Theming - light and dark modes plus custom color themes with a live preview.
* Responsive layout - adapts the control placement for phones and larger screens.
The app works fully offline, stores all data locally on your device.
Screenshots
How to install
- Download the APK from the button at the top of this page.
- Allow “Install unknown apps” for your browser or file manager only, not for every app.
- Open the downloaded file and confirm the installation.
- If installation fails with “App not installed,” remove an earlier build of the same app first. A signature conflict is the usual cause.
Data safety
- Every file is checked against its published SHA-256 before it is listed.
- Files are scanned for malware on every update.
- The permissions each app requests are listed on its own page.
- Read the full safety policy for how we test, flag, and delist files.
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