Sudoku

No AD's and no in App Purchases! Pure Sudoku. Want to give your brain a much needed logical workout? Or are you looking to relax? This FREE Sudoku is for you! So, are you ready to give your brain a workout? Choose from 5 levels of difficulty and 4 nice colors for the board. Use hints, note taking, auto checking and many more, you can either complete the challenge without any help, as you would old school with pen and paper. But you can use all the help you’d like. Features: * Pure Sudoku experience * Notes with autofill to help you find the right number * Automatic error checking * Fair Hint system * Night mode * Lots more color modes depending on your mood Play on 9x9 grid Tons of puzzles from easy to expert A simple & clean design.