Daily review

Ten cards a day. A card you know comes back later, a missed card comes back tomorrow: that's spaced repetition.

Sound

How it works

Spaced repetition

You remember better by seeing something again just before you forget it. Every card you know comes back after 1, 3, 7, 15 and then 30 days; a missed card comes back the next day.

The cards come from your mistakes in the flag, capital and shape games, then from countries you don't know yet. Your review earns nuggets and counts for your streak, just like a game.

Keyboard: Space flips the card, 1 for “Review again”, 2 for “I knew it”.