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Search in kanji, kana, or rōmaji. Get the reading, meaning, and an example at a glance.
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Features
Everything you need to build a Japanese vocabulary that lasts.
Search in kanji, kana, or rōmaji. Get the reading, meaning, and an example at a glance.
Add any word in one tap. Review with spaced repetition, built around your pace.
Your words and progress stay with you across Mac and iPhone.
Create study sessions, check naturalness, and get simple explanations when you need them.
Practice from N5 to N1 with timed sessions and clear results.
Keigo, email phrasing, meetings, and interviews. Japanese for work.
Save subtitle lines as flashcards while you watch.
Download SoonReview hands-free with voice.
Setup guide SoonInside the app
Every preview below is rebuilt from the real app experience.
Type / to open quick commands for translation, grammar, corrections, and more.
Two actions happening at the same time.
Sunlight leaking through leaves — a famously untranslatable word. 木 tree · 漏れ leak · 日 sun.
cherry tree; cherry blossom
to go home — back to where you belong.
to go back — to any previous point.
Spaced repetition, plus the tools you need while the card is still in front of you.
Describe neighbours who argue every night.
隣人は絶えずけんかしている。
Continuous. More written.
Formal. Often used in rules or speeches.
Capture a line while you watch. Mitsuki keeps the frame, audio, and subtitle with your card.
(綱手) 遅い! 何をチンタラしてた!? ったく!
Every captured card keeps the exact frame, so the word has a place in your memory.
Replay the line and hear it again in context.
Subtitles become tappable words. Your target word is highlighted.
Your review health becomes a sakura tree. Keep reviewing, and it blooms.
Your tree shows your deck health, from sprout to full bloom.
Streaks, levels, and milestones help make review part of your day.
Gentle reminders when cards are ready.
More ways to study, one tap from the dashboard.
彼らは絶えずけんかばかりしていた。
Cloze exercises from your own cards.
Browse grammar by JLPT level and track your progress.
Write a little Japanese each day, with corrections as you go.
Keigo, email writing, meetings, and interviews.
Adjust tone across six politeness levels and check naturalness.
Add on Mac. Review on iPhone. Stay in sync.
Open Mitsuki from anywhere. Look up a word, save it, and get back to what you were doing.
Type a word, paste Japanese, or use a command.
Search and flashcards are free. Pro adds more powerful AI tools.
FAQ
Everything you might want to know before you start.
Yes. Searching the dictionary and building flashcards with spaced repetition are free, with no ads and no account required. Mitsuki Pro adds optional AI study tools and higher daily limits.
Mitsuki is a native Mac app today, with iPhone coming soon. When you sign in, your words and review progress sync across your devices, so you can add on Mac and review on iPhone.
No. Mitsuki has its own built-in flashcards and review engine. If you already use Anki, the Mitsuki Extension can capture subtitle lines while you watch — but Anki is entirely optional.
Cards come back on a spaced-repetition schedule that adapts to how well you remember each word. Rate a card Again, Hard, Good, or Easy and Mitsuki spaces the next review to match — more often for the words you find hard, less for the ones you know.
Your study stays on your device until you choose to sync. There are no ads, no analytics SDKs, and no cross-app tracking. When you do sign in, your flashcards and progress are tied to your account only. See the full Privacy Policy for details.
Lookups are powered by JMdict/EDICT, the open Japanese–English dictionary maintained by the Electronic Dictionary Research and Development Group. You can search in kanji, kana, or rōmaji and get the reading, meaning, and an example at a glance.
Privacy
Search and study on your device. Sign in only when you want sync.
Your flashcards and progress are protected for your account only.
No ads. No analytics SDKs. No cross-app tracking.
身につく日本語
Look up a word. Save it. Review it when it matters — free, with no ads and nothing to track.
macOS 13 or later · iPhone coming soon