• Powerful
This app comes with hundreds of levels at various difficulties. If you are not satisfied with the built-in levels, you can simply create your own ones. Besides the regular playing mode, this app is also capable of solving sudoku puzzles with just a single tap.

• Helpful
The app automatically highlights not only existing numbers but also possible locations, which helps to make the solving process much easier.

• Colorful
People love to set their own theme colors as personal expressions. In this app, there are dozens of harmoniously designed themes to choose from.