The JP SRS we wish existed

Not just Flashcards.
The Best SRS for Japanese.

For beginners, advanced learners, and everyone in between.
Radicals, kanji, vocabulary, grammar, sentences, and more.
Bring your progress from Wanikani, Bunpro or JLPT level.

210+ Radicals
2,200+ Jōyō Kanji
N5->N1 Grammar
Core 12K+ Vocabulary

A Japanese learning app for the future

Built Around How Japanese Works

No streaks. No levels. No locked progression.
Crafted tools that help you learn and bring joy.

FSRS-6 Multi-mode

21-params memory model.
Adapts specifically to you.
Multiple Choice, Recognition
& Production modes.

Component Analyzer

Understand Radicals.
See kanji as compositions.
Build your own mental connections.

Connected Knowledge

Kanji, Vocab, Radicals, Grammar, Sentences...
Study them together or separately.
Everything links automatically.

Pitch Accent
& Neural TTS

Rich pitch accent data.
High-quality neural voices for natural pronunciation.

Smart Sentences

Created based on your learning journey.

Go Monolingual with AI

Build monolingual interactions naturally.
Multi-layered AI backed by real dictionaries.

Verb Conjugation

Practice all forms with instant feedback.
Master conjugation patterns.

Study Freedom

No locked levels.
Add custom content.
Your pace.

Try it now

Outside of SRS, we create tools that help you connect your dots.

View on desktop to try the interactive demos

Try in App - Free

Built for real study sessions.

Desktop for deep learning. Mobile PWA for reviews on the go.
Open kanjios.com/app on your phone and tap 'Add to Home Screen'

Launch App