A free program for Android, by Mikko Tyrskeranta.
Dual N-Back is a game that uses a scientific approach to help you improve your working memory and fluid intelligence. It has been designed in such a way that will keep you interested and eager to complete the levels.
The idea is to keep track of two things: the letter sounds and the flashing squares. You will be given a sequence of letters to remember for each round, but the difficulty of the levels will be changed. The game is quite easy to get into because there are many tips and animations to help you learn the gameplay. However, it gets more challenging as you progress.
