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About Sumi: Learn Japanese

Sumi teaches Japanese the way a good textbook does, then gets out of the way. Every character is shown before it is asked about: the strokes in order, the sound, the meaning, and where the shape came from. Then, and only then, the question. No streaks to protect. No leagues. Miss a week and nothing is taken away: the queue waits, and the characters you were shakiest on come back first. かな · KANA, TAUGHT PROPERLY Twenty guided lessons across hiragana and katakana, five characters at a time. Animated stroke order, the sound, then a gentle check. What you learn returns on a spaced schedule. 漢字 · A KANJI LIBRARY YOU CAN ACTUALLY READ 2,384 characters, searchable and filterable by JLPT level, each with animated stroke order, readings and meanings. Every one of them now has a recorded reading you can play. 解字 · KANJI X-RAY Pull a character apart and see why it looks the way it does. 時 is 日 (day, sun) beside 寺, and 寺 is only there for its sound, じ. It lends that same sound to 持 and 侍. Once you can see which half means and which half sounds, you stop memorising and start reading. 文庫 · THE REFERENCE SHELF Kana charts with stroke order for every glyph. Radicals. Particles, phrases and counters. 5,686 words, many shown inside real sentences. Word families. A grammar reference. And a number reader that answers the question the textbooks skip: how do you actually say ¥3,600, or 4:30, or 九月八日? 文机 · THE DESK Build your own collections out of anything in the app, then study them. SOMETHING QUIETER Nine paper-and-ink themes. A seasonal wash that follows the twenty-four Japanese sekki, so the app looks slightly different in autumn than it did in spring. Japanese set in Zen Old Mincho, because the characters are worth typesetting properly. WORKS OFFLINE Lessons, reviews, the whole library and the audio all work with no connection. Progress is saved on your device, and you can start without making an account at all. Add an email only if you want your progress to follow you to another device. A NOTE ON ACCURACY Sumi's kana, kanji and stroke-order data come from open reference sources (KanjiVG and KANJIDIC2). The grammar explanations, reading passages, conversations and idioms have been through a native-speaker review. The generated example sentences have not been yet, and we would rather tell you that than imply otherwise. Sumi Pro is optional. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period, and can be managed or cancelled in your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://studysumi.com/privacy

What’s new

Version 1.0.6 · Updated October 22, 2026

Today's lesson Each day Home suggests a lesson sized by how you feel: Light, Steady or Keen. Warm up, learn a few kanji, the words built from them and a grammar point, then read one sentence that uses them all and press the day's stamp. It is only a suggestion: skip any step, leave whenever you like, and everything you finish is kept. A Home you arrange Home is rebuilt around today's lesson, and it is yours to arrange. Drag a card to move it, drag its corner to make it small, medium or large, and tuck away anything you do not use. New cards settle first A card you have just learned comes back later the same day and again the next, and joins your reviews once you have got it right in two separate sittings, so review is the cards you know rather than a wall of ones you only just met. Sumi Pro in the app You can now get Sumi Pro inside the app through the App Store. Already have it on this Apple account? Tap Restore in Account or Settings. Readings your way In Settings, under Reading, you can hide rōmaji and read in kana only, everywhere except the kana lessons. A kanji's on'yomi now show in katakana, as dictionaries print them: 食 ショク, たべる. Also new Questions with four short answers show them two by two. The Kanji Library's list is a grid of tiles again. On the flick keypad the kana around your finger are no longer hidden by the next key, and replaying a review keeps its sounds. Everything still works with no connection.

App privacy

The developer, Abdullah Bavana, reported these privacy practices to Apple.

Data Linked to You

The following data, which may be collected and linked to your identity, may be used for the following purposes:

  • Usage Data: Product Interaction
  • Contact Info: Email Address
  • User Content: Other User Content
  • Identifiers: User ID

Used for: Analytics, App Functionality