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.
Frequently asked questions
What is Sudoku?
A clean Sudoku app with logic-based difficulty and helpful assists
Who develops Sudoku?
Sudoku is developed by Likhith Praveen K.
Which Android version does Sudoku require?
Sudoku requires Android API 24 or later.
What is the current version of Sudoku?
The synchronized F-Droid version is 1.1.0.
Which license does Sudoku use?
The signed F-Droid metadata lists GPL-3.0-or-later.
Where is the source code for Sudoku?
https://github.com/likhithpraveenk/sudoku
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