Learn Kanji Like a Native:In-context
Master kanji with structured, level-based, context-first lessons. Then immerse yourself with output games, manga, and more.
The OniKanji Experience
Our native-built, structured approach puts kanji in context—exactly how your brain learns best.
20 Kanji per Level
Progress through carefully structured levels, N5 to N1, with 20 new kanji in each.
Accurate Readings & Context
Master both the most relevant on'yomi and kun'yomi for each kanji with multiple context-rich examples.
Rapid Vocabulary
Build your Japanese lexicon with 60+ high-frequency vocabulary words in every level—vocabulary that you can actually use.
Read What You Own
Upload the manga you already own and read it with automatic furigana, one-tap translations, and grammar breakdowns.
New: OniKanji for Android
Master Kanji, from your pocket
Everything from the web app, now available on your phone.
- Review reminders the moment your kanji are ready
- Quick 5: five reviews in about a minute, anywhere
- Type readings in romaji, no Japanese keyboard needed
- Read your own manga using our assisted tools
iPhone coming soon
The OniKanji Method
Unlock kanji mastery with our integrated approach: context-rich lessons, smart algorithms, personalized progress tracking, and authentic immersive materials.
New Lessons
Learn new kanji and vocabulary through structured micro lessons that build your foundation. Each lesson introduces curated sets of words with example sentences and context-first exposure.
SRS Reviews & Stats
Master kanji efficiently with our intelligent SRS system. Our advanced algorithms dynamically adjust question types and difficulty levels while keeping your review queue manageable and effective. Monitor your improvement through comprehensive statistics and intuitive visualizations that showcase your Japanese learning progress over time.
Level Up & Compete
Earn experience by completing lessons and reviews. Level up, unlock the next chapter of our original manga, and see how you stack up on the leaderboards.
Bring Your Own Manga
OniKanji turns your favorite manga into seamless study sessions. Upload the manga you own and read it with one-tap translations, automatic furigana, and full grammar breakdowns.
- Bring manga you own —upload your purchased manga or PDFs
- Built-in OCR —no clunky browser extensions or extra software to wrangle
- One-click translations to English
- One-click grammar & context breakdowns
- Furigana added automatically
What our users say
340,000+ kanji, vocab and sentence reviews completed by our learners
Join an active community of satisfied learners who have transformed their kanji journey with OniKanji.
Onikanji's learning in context, makes vocabulary a first class citizen with each Kanji you learn, as well as a variety of tools to understand and deepen your study, makes this the most effective tool to learn Kanji and Japanese vocabulary I've found.
- Joao P., N5 Level Student
What I like the most about OniKanji is that I'm not only learning Kanji, but also useful vocabulary.
- Klaas D., N5 Level Student
With OniKanji, learning vocabulary alongside each kanji has really helped solidify the meanings and readings in my head, such that I'm seeing noticeable differences in my reading speed and comprehension. Running into vocabulary learned through OniKanji while reading is very rewarding. That combined with the immersion features makes this an app I use daily for my Japanese studies.
- Christina C., JLPT N3
