Mizuru 沐學Go from zero to reading real Japanese.
News, classic stories, the sign on the street corner. Mizuru pairs a 9,894-word JLPT dictionary and all 828 grammar points with an FSRS memory engine that reviews only what you're about to forget — so every minute moves you toward reading, not re-drilling.
Real Japanese — at your exact level, from the very first day.
Most apps trap you in cartoon sentences for months. Mizuru puts authentic Japanese in front of you immediately, then tunes it to where you actually are.
- The same news story, five ways. Every article is rewritten across N5→N1 with furigana, audio narration, and comprehension questions.
- 100+ Aozora Bunko classics with furigana, a parallel modern-Japanese translation, and karaoke audio you can slow to 0.5×.
- Scan & Read. Point your camera at a menu or a sign — get furigana, a vocab breakdown, and a translation in your language.
- Know before you dive in. Each article shows its key vocab, grammar, and your mastery % — so you prep exactly what you need.
Grammar you finally get — not grammar you cram.
納得 (nattoku) means “now it makes sense.” Instead of a dry rule to memorize, every point gets a guided 納得 lesson that builds the pattern up from real examples until it just clicks.
- A step-by-step walkthrough for each point — you see how the pattern works, not just what it is.
- A two-voice example conversation that shows the grammar in the wild, with tap-to-hear audio.
- A quick check at the end so you know it stuck — then the point enters your review deck.
- All 828 JLPT points, N5–N1 — look up exactly the grammar you hit while reading.
Say what you actually mean — in real Japanese.
Stuck mid-conversation? Type what you want to say — in Japanese or in your own language — and Mizuru shows you how a native would put it, with furigana and a note on why. Speak like yourself, not like a phrasebook.
- Type it your way. “How do I say I’ll be about five minutes late?” → 5分ほど遅れます — natural, with furigana and the nuance explained.
- Replies you can always follow. The AI reads your review deck and answers only with words you’ve mastered — plus at most one new one.
- Gentle corrections + a weak-spot tutor that targets your highest-lapse patterns, like 〜てしまう vs 〜てしまった.
- Save any word from a conversation straight into your deck — every reply is a lesson.
A memory engine that respects your time.
Mizuru runs on FSRS, the modern spaced-repetition algorithm. Words you find hard come back fast; words you've mastered drift into long intervals and stop stealing your attention.
- Never re-drill what you already know. Five review modes — flashcards, speed, typing, matching, and audio-block rebuild.
- Words enter your deck as you learn them — from lessons, reading, conversations, or a scan. Everything you meet, you can keep.
- Local-first, sync optional. Learn offline on your device; sign in to carry your progress across phones.
The core isn't a trial. It's the whole ladder, N5 to N1.
No paywall on the fundamentals. The AI extras have a generous free daily quota; reviewing is never capped.
Vocabulary, N5–N1
Frequency-ranked, with readings, part-of-speech, kanji breakdown, and meanings in 20 languages.
Grammar points
The full JLPT set with formation rules and example sentences — reference exactly what you hit while reading.
Kana, from zero
All hiragana & katakana with dakuten, handakuten and yōon — plus 8+ drill formats and stroke-order handwriting.
Particles & radicals
20 core particles explained (は vs が, done right) and 14 foundational kanji radicals with stroke order.
Your language
Fully localized in 20 languages — learn Japanese through the language you already think in.
Real slang
やばい・めっちゃ・草 — the casual, internet and dialect speech textbooks skip (crude terms behind a toggle).
Our mascot is a water droplet. Not a flame.
Mizuru is a deliberate counter to guilt-driven, streak-shaming apps — real momentum without the anxiety.
"Built by two people who got tired of cartoon sentences and streak guilt. Now in private beta — join the first learners shaping it."
— The Mizuru teamBe one of the first.
Join the private beta on iOS TestFlight or Android today — or drop your email and we'll notify you the day Mizuru launches. Free core, free forever. We read every reply from early testers.