A spaced repetition app for words.

What it does

You forget a new word a little more every day until you meet it again, and each time you do, it lasts longer. A spaced repetition app keeps track of that for every flashcard, so you don’t have to: each day it shows you the flashcards that are due, and nothing else.

How Misu works

• 1

  Pick your words

  A ready-made course of the most common words, or flashcards you make from words you meet.

• 2

  Review each day

  Swipe right if you knew it, left if you didn’t. Audio plays on every flashcard.

• 3

  FSRS plans the rest

  Every flashcard comes back right before you’d forget it, with longer gaps as you learn it.

A daily review takes a few minutes. Set a reminder for the time that suits you, and review on the train without a connection: Misu works offline and syncs across your devices.

Words to review

• Courses in ten languages. Spanish, French, German, Italian, Portuguese, Russian, Hindi, Japanese, Korean and Chinese, each the 1,500 most common words with audio and a picture, building up to full sentences.

• Learn to read first. Decks for hiragana, katakana, Hangul, Cyrillic, Devanagari, and pinyin with tones.

• Your own flashcards, in any language. Type a word in any of 76 languages and Misu fills in the meaning, a picture, example sentences and audio. Or ask for a whole set, like ten flashcards about coffee.

• Words from anywhere. Select text in any app and tap Save to Misu, or scan a page with your camera and tap the words you want.

Scheduled by FSRS

Misu plans every review with FSRS-6, the sixth version of the open-source scheduler. It keeps a model of how well you know each flashcard and brings it back when your chance of remembering falls to 90%. Once a month, Misu fits FSRS to your own reviews, so the schedule follows how your memory works. How FSRS works, step by step.

Keep going

• A garden

  Plant a flower every day you review, and watch your month fill up.

• A monthly receipt

  Every month, Misu prints a receipt of the words you learned.

• Words you know

  See how many words you know, growing as you review.

• Audio on every flashcard

  Natural voices, so you hear each word as you learn it.

What to look for in a spaced repetition app

• A modern scheduler. FSRS predicts how likely you are to remember each flashcard, and learns from your reviews. Older schedulers follow fixed rules, the same for everyone.

• Audio on every flashcard. Words are for hearing and saying, not just reading.

• Decks for your language. Ready-made flashcards for the most common words save you weeks of making them.

• A quick way to add words. The words you meet in shows and books are the ones worth keeping, so adding one should take seconds.

• Reviews that fit your day. On your phone, in a few minutes, with or without a connection.

Free word lists

Every language Misu teaches has its 1,500 most common words online, each with audio, and a level test that finds where you are in about four minutes.

• Chinese 1,500 words Level test
• French 1,500 words Level test
• German 1,500 words Level test
• Hindi 1,500 words Level test
• Italian 1,500 words Level test
• Japanese 1,500 words Level test
• Korean 1,500 words Level test
• Portuguese 1,500 words Level test
• Russian 1,500 words Level test
• Spanish 1,500 words Level test