The Sudoku Forever app was designed for those of you who are looking to relax and have a fun time while doing it. This game is a simple and clean minimal interface that allows you to focus on solving the puzzle. No fancy graphics or sounds.

There is an option to keep track of potential plays by placing up to nine marks in each square. If you're looking to train your brain, this game is a great option. There are several hints available to help you out, and they start with the simplest plays to help guide beginners and then progress to more advanced hints.

The app does not require a WiFi connection.