This app provides unique features to enhance your Sudoku solving skills. - Easy Mode where the Input Bar removes all the invalid entries - Hint tool to show a solvable cell without revealing the solution - Peer tool to show the numbers in a cell's peer set - Unit buttons to show the missing numbers of a box, row or column - Additional tools: Undo, Lock, Unlock, Check and Reveal - Tutorial in English and Chinese Try using Chinese numerals, emojis, mahjong dots and many others instead of numbers, it's fun! You will be surprised that you can actually do it!