Sudoku - Time challenge app analytics for January 20

A free Sudoku game - with unlimited games in all levels from super easy to almost impossible. The stylish and easy-to-use interface includes a timer and a time to beat for all boards, a ranking/world ranking, statistics and performance graphs. A built-in tutorial will get you started and helpers can be turned on/off as you like. Two playing modes for fast playing early and late in the game. There is even a "paper experience" mode for those who like to play Sudoku with pencil and paper. Solve the daily challenge and get extra points to improve your ranking!