This is the full featured Sudoku app that you will find. This version includes several game types and includes 5 levels of difficulty for each.The interface includes easy to navigate menus, a an intuitive game board design. You also have the ability to save multiple games to resume at a later date.Levels of difficulty have allows this game to be played by an absolute beginner all the way to the most hardcore Sudoku Master.The Super part of the name describes the features. The Pro describes the highest level of game play...and Free denotes the price you pay for all itGive it a try and I am sure you will not be disappointed.A non-free version will be made in the future which will be free of ads.