A full version program for Android, by MALLUSOFTS.

Sudoku Challenge Offline is an app designed to help you learn how to solve sudoku puzzles. This is an offline version that does not require an internet connection, making it the perfect brain training game for your Android device. It is one of the most popular classic brain games that you can play.

In Sudoku Challenge Offline, the goal is to fill the cells with numbers from 1 to 9 so that each number is used once in each row, each column, and each small square. The game is designed in challenge mode, which means you need to collect stars to unlock the next level.