Kanji lab
Browse kanji by Irodori lesson or JLPT level. Study stroke order, vocab examples, quiz yourself, and track long-term retention with spaced repetition.
By Irodori LessonNew
Kanji grouped by the Starter lessons where they first appear.
SRS Review
Flashcard review scheduled with SM-2 spaced repetition (browser-local).
Quiz
Multiple-choice and typing practice across N5 and N4.
By Radical
Browse kanji grouped by their Kangxi radical.
My Progress
Mastery heatmap across lessons and JLPT levels.