About

Goldfish n-back is a dual 𝑛-back game that challenges your working memory. Each round of the game displays a number somewhere in a 3×3 grid. Your task is to determine if the number and its position match the number and position 𝑛 rounds back.

Play the web app above, or download the macOS app with more features. It's free, has no ads, no sign-up, and is privacy focused.