A reading, two kanji that are easy to confuse, and a few seconds to choose. The whole app is that one card, over and over.
Each card pairs a kanji with a character people genuinely mix it up with, scored ahead of time across look, meaning, and reading.
The countdown runs while you decide, you can change your pick until it reaches zero, and the next card arrives on its own.
When the card grades, the right kanji is circled and the other one's meaning appears, so even a card you miss teaches you two.
Spaced repetition plans the days, while a separate in-session queue brings a missed card back a few cards later.
Every twenty cards the drill pauses for a moment and offers one of 200 small, cheerful facts about Japan.
The 2,230 kanji meanings are translated too, so the card reads in your language and not only the tab bar does.
Fast Kanji Quiz shows a reading, two kanji, and a short countdown. The second kanji is never random: it is picked because it looks like the first (早 and 草) or because it means something adjacent (南 and 西), since the mistakes learners actually make are confusions rather than blanks. All 2,230 JLPT kanji sit in small themed groups you can finish in a sitting, spaced repetition decides what comes back and when, and the kanji meanings themselves are translated into 20 languages, not just the buttons around them.
iOS, in 20 languages. No account to make, and your progress stays on your phone.