OpenKanji: JLPT Japanese Kanji

Learn Japanese kanji for the JLPT — free, open, offline, and made to be used every day.

OpenKanji teaches the kanji and vocabulary for JLPT N5, N4, N3, N2 and N1: learn
new characters, review them on a schedule that beats forgetting, write them by
hand, and look anything up in a full offline kanji dictionary. Open it and study —
all five levels are yours from the first launch.

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LEARN → REVIEW → QUIZ
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• LEARN kanji and words a batch at a time, at the JLPT level you choose (N5–N1).
• REVIEW with spaced repetition — flip-card reviews bring each kanji back right
before you'd forget it.
• QUIZ yourself on a whole JLPT level anytime with quick multiple-choice rounds.

Everything you study flows into one review queue, so progress builds naturally.

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WRITE JAPANESE BY HAND
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• Practice kanji handwriting on a clean, paper-style canvas, with stroke order
you can replay.
• On-device recognition checks the character AND how you shaped it, so
look-alikes and rushed strokes get caught.
• Forgiving by default — switch to Strict mode in Settings if you prefer.

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PLAY
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Four kanji games on every level, each keeping your best score:
• Find it — spot a kanji among convincing look-alikes.
• Echo — watch a sequence, then tap it back in order.
• Pairs — clear a board of kanji and meanings against the clock.
• Stroke dash — write the character before time runs out.

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KANJI DICTIONARY — LOOK ANYTHING UP
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• Search by meaning, by reading, by radical — or just DRAW the kanji you can't
name.
• Tap a kanji for meanings, readings, radicals, example words and sentences;
tap a word to break it into kanji; tap a radical for every kanji using it.
• Explore phonetic (声符) series — kanji grouped by a shared sound component
that often hints at the reading.

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ANALYZE — TYPE OR SNAP
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• Paste any Japanese sentence and OpenKanji splits it into tappable pieces.
• Or SNAP A PHOTO — on-device text recognition reads the Japanese on a sign,
menu, or textbook page.

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OPEN AND OFFLINE
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• All five JLPT levels — N5, N4, N3, N2, N1 — plus everyday Essentials, all
included from the first launch.
• Works fully offline, on a train or a plane. Open it and study; your progress
stays on your device.
• In 8 languages: English, Bahasa Indonesia, 中文, Tiếng Việt, 한국어, Filipino,
Português and हिन्दी. Meanings and sentences translate on-device too.
• Optional daily reminder, colour-blind-friendly right/wrong colours, light and
dark themes, and a handwriting-style font.

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ADS & REMOVE-ADS
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Light ads keep OpenKanji open for everyone:
• They appear only at natural breaks between sessions — lessons, reviews and
quizzes run uninterrupted.
• One optional purchase removes them forever.
• Every feature and every JLPT level is included either way; the purchase
changes only the ads.

Kanji and dictionary data come from the open projects KANJIDIC2, JMdict,
KanjiVG and KRADFILE — all credited in the app. Every example sentence is
written for OpenKanji. Handwriting, text recognition and translation run on
your device via Google ML Kit.

Open learning for everyone. Happy studying! 開