Sudoku Dan Lite app for iPhone and iPad
Sudoku Dan Lite is a free introductory version of the two-player game of skill that uses a sudoku grid as the board. It isnt a puzzle or a race, but a tactical challenge like Chess or Go. Play against the computer or with a friend. A full set of rules comes with the app. Three more skill levels and Game Center features are available if you buy the full Sudoku Dan app, already available.