Kotobask: Japanese Vocabulary

Master JLPT vocabulary with quick 4-choice quizzes, native-quality audio for every word, and smart mastery tracking. No ads, no account needed.

Kotobask is a fast, focused vocabulary trainer for Japanese learners preparing for the JLPT — or anyone building a solid Japanese word base.

STUDY 1,100+ ESSENTIAL WORDS • Curated decks covering JLPT levels N5, N4, N3, N2, and N1 • Every word comes with a reading, English meaning, and example sentence

QUIZ YOUR WAY • Quick 4-choice quizzes: Japanese → English, English → Japanese, or Listening mode • Retry wrong answers instantly, or continue with fresh words • "New words only" mode to focus on what you haven't studied yet

HEAR EVERY WORD • Native-quality audio for all words and example sentences • Carefully reviewed pronunciation, including pitch-accent corrections • Audio works offline — no waiting, no streaming

TRACK YOUR MASTERY • Five mastery levels (New → Weak → So-so → Good → Perfect) based on your recent answers and speed • Stats dashboard with streaks, accuracy trends, and deck progress • Weak-words mode to attack exactly what you keep missing

MAKE IT YOURS • Add your own vocabulary with My Vocab • Save any word for later review • Pin your favorite decks to the top

PRIVATE BY DESIGN • No account required — start learning in seconds • No ads, no tracking • Your progress stays on your device, with anonymous cloud backup

Whether you're cramming for the JLPT or reviewing on the train, Kotobask keeps every session short, focused, and satisfying.