Sudoku Free is an engaging and fun video game app that lets you play the classic sudoku game from the comfort of your mobile Android device. The graphics are superb in this version of the game, and the game contains a wide range of puzzles spanning five difficulty levels. With more than 1,500 games in the library, you'll never run out of things to do in this app.

The interface is smooth and sleek, and the game keeps track of your stats. You can track your average completion time, fastest times, and total percent complete for each individual puzzle. There are various hints you can use with each puzzle to help solve them faster, and the game includes two different themes for the board.

In order to cater to all playing styles, the game comes with two modes for adding notes to the board so you can use whatever logical progression you find easiest. The game supports the ability to undo one of your answers, and it supports both tablet and smartphone platforms that run the Android operating system. Since this is a free version of the app, it is maintained by ads for third-party services. You'll have to give the app permission to access media/files/photos on your device for cached ads.