Sudoku Number Battle Quest

There is no need for a paper puzzle ever again!
With 4 difficulty levels, intuitive interface, and all the functions right at your fingertips, this Sudoku app is sure to be your favorite.

* 4 levels - easy, medium, hard, very hard
* Pencil marks with auto fill / erase, as specified in settings
* Undo and Redo
* Top scores and History
* Selected digit highlighting, as specified in settings
* Incorrect entry highlighting, as specified in settings
* Progress Tracked for each level, beat your previous scores!

Supports: almost all Android devices.