The free version of Sudoku 20K is available on Apple Store for iPhone/iPad. Full functionality with only limited sudoku puzzles. The full version contains 20360 sudoku puzzles with optional timing, notes, score and artificial intelligent relax mode; thinking like you are thinking.
Free Sudoku 20K at Apple Store
Functional video
Game solved on iPad video
Free Sudoku 20K at Apple Store
Functional video
Game solved on iPad video