Used Mastersoft SuDoku - Winner 2008 for iOS?
Developer’s Description
An advanced Sudoku game for iPhone developed by over 200 players with many unique features. Now with the choice of a floating or standard keypad. Six levels! Simple, Easy, Medium, Hard, Very Hard and hand crafted 'Master' level! Comes complete with classic sudoku, picture sudoku, color sudoku, alpha sudoku.
Used Mastersoft SuDoku - Winner 2008 for iOS?