Now on the App Store


スクロールで、日本語を。

Koto turns short clips of real Japanese speakers into lessons. Read along word by word, tap any word for its meaning, and review what you saved as daily flashcards.

Download on theApp Store
1,800+ short clips Japanese + romaji + English Hiragana & katakana decks

Clips from

  • Anime アニメ
  • Travel 旅行
  • Gym ジム
  • Makeup メイク
  • Daily life 日常

Ten seconds at a time.

Textbook sentences don't sound like real people. Koto teaches you the Japanese people actually speak, in clips short enough to fit between anything.

Step 1

Scroll clips you actually enjoy

Every clip is 10 to 15 seconds of a native speaker, from anime scenes to travel vlogs. Swipe up for the next one, just like the feeds you already use.

  • Pause, replay or slow any clip down
  • Bookmark the clips you want to come back to
Koto feed playing an anime clip with the caption ちょっと, Just a moment
Step 2

Read along, word by word

Each line is split into words with romaji underneath. The word being spoken lights up in blue, and the English meaning sits right below.

  • どうするつもりですか becomes five words you can see and hear
  • No guessing where one word ends and the next begins
Caption どうするつもりですか split into word chips with romaji, translated as What are you planning to do?
Step 3

Tap any word

Get the reading, part of speech and meaning, plus a plain-English explanation of how it's used and the full sentence from the clip.

  • Hear the word pronounced
  • See it in context, not as a dictionary entry
Word card for ながら, nagara, a particle meaning while, with an explanation
Step 4

Remember what you learn

Words you save turn into daily flashcards, and Koto keeps count of every Japanese word you know. Starting from zero? Learn hiragana and katakana first.

  • Daily review cards
  • Hiragana & katakana decks with audio
Vocab screen showing 63 Japanese words known and 20 cards to review
Hiragana deck with 104 cards and 14 due for review
言こと

Why “Koto”?

言葉 (kotoba) is the Japanese word for “words”. Koto is built around exactly that: one real word at a time, heard in context, from people who actually speak the language.

Start scrolling in Japanese.

Available now on iPhone. Android is on the way.

Download on theApp Store