Dual N-back. Scientifically proven memory workout! - Every session consists of 40 turns. Each turn a square will light up in a 3x3 grid and a letter will be read out loud. - Your job is to remember both the letter and the position of the square - and then indicate when the current square or letter is the same as it was N turns ago. - As you get better, the number of turns N you have to remember is increased. *** Features *** - Track your progress - Toggle automatic level adjustment - Dark Mode support on iOS 13 - Change game duration and delay between readings - Landscape game play support - Change sounds - Inverse buttons - Exporting your gameplay data - Link your account with email *** Terms of Use *** - https://jensgrud.wixsite.com/nback/terms