A Pro Sudoku game - completely ad-free - with unlimited tried and tested 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 and detailed statistics to help you improve including performance graphs and tips. Each board comes with an actual top-10 world record and median time based on real players. 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. And a built in world ranking system as well as estimation of mental age. Solve the daily challenge and get extra points to improve your ranking!