Dual N-Back, without the clutter.
N-Back is a Dual N-Back trainer for iPhone and iPad. A square appears on a grid and a letter is spoken. You tap when the position or the sound matches the one from N steps back. It is easy to learn and gets hard fast, which is the point.
Download on the App Store



A working memory task used in cognitive research. You see and hear a sequence and respond when the current item matches the one N steps earlier, for position and sound separately.
A round takes about a minute. The default daily goal is five rounds.
The app is free to download. A subscription unlocks full training, with a 7-day free trial on the yearly plan.