A free app for Android, by NextAPP.

If you are someone who likes logic puzzles, you can’t miss this one! In this game, you need to put numbers from 1 to 9 in each cell. For each row, column, and 3×3 sub-grid, you need to have all the numbers from 1 to 9, and you can’t repeat numbers. If you succeed in filling all the numbers, the puzzle will have the correct answer.

If you are a beginner, you can start from easy Sudoku, and the difficulty level can be adjusted as you get better. If you are already a logic master, you can also go directly to the expert puzzles and experience the fun of thinking!

You can choose the classic Sudoku board or the new themes. With the new themes, you can choose from a variety of cool and unique styles.