nihonten

Your Japanese classroom, in your pocket.

Nihonten takes you from zero Japanese to real fluency — with a complete offline toolkit that's free forever, and an AI teacher that adapts every lesson to your level.

LEARN FOREVER
• Hiragana & katakana — guided kana lessons from your very first ん
• Offline dictionary — 212,000+ words, 10,000+ kanji, 828 grammar patterns
• Grammar lessons — plain-language explanations with fill-in-the-blank, reorder, and recognition exercises
• Smart flashcards — spaced repetition brings each card back right before you'd forget it
• Kanji drawing — stroke-order practice built straight into your flashcards
• Draw-to-search — see a kanji you can't type? Draw it, even with the wrong stroke order
• Camera lookup — point at a menu or sign, tap any word for an instant definition
• 72 JLPT levels — grammar, vocabulary, and kanji from N5 to N2; master kanji to unlock the next level

STUCK? ASK AOI-SENSEI
Chat or talk out loud with your personal AI Japanese teacher. Answers arrive at your level, with furigana, dictionary links, and an English explanation when you want one.

PRACTICE THAT FITS YOU
Nihonten learns what you know — and what keeps slipping — then builds practice around it:
• Reading — passages from 1000+ topics, tuned to your level and weak points
• Listening — JLPT-style audio drills in the real exam's formats, replayable offline
• Conversation — roleplay a konbini run or a first date; corrections as you go
• Translation — get graded on accuracy, naturalness, and grammar, with written fixes

WORKS OFFLINE
Your study material lives on your device. Dictionary, flashcards, kana, kanji drawing, and saved lessons all work with zero connection — study on the plane to Tokyo.

Start now — and see how far your Japanese can go.