Obviously, for those of us with color blindness this wouldn’t be very helpful, I could make the app on usable. I read the review that suggested having each number be a different color.

This is the first sudoku app I’ve been able to use easily. I’m visually impaired and Red/green colour-blind.

Please contact our support team at if you have any questions, comments, or suggestions about improving this Sudoku app. * Submit results and track progress online * Two levels of automatic error checking option * Selected digit and various other highlighting options * 3 input modes: 'Digit first', 'Cell first', popup Want to know how you stack up against other Sudoku players? Upload your results to our servers and see for yourself, or take part in a weekly Sudoku competition. Interrupted? Exit Sudoku, and the puzzle is saved exactly as you see it! With 4 difficulty levels, intuitive interface, and all the functions right at your fingertips, this Sudoku app is sure to be your favorite.

You won’t be looking for a paper puzzle ever again!

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