PlayKatsuyo

Katsuyo turns Japanese conjugation from a memorization chore into a few minutes of daily practice. Pick a JLPT level from N5 to N1 and play a timed round: you're shown a word and a target form, and you choose the correct conjugation. Score points for speed and accuracy, hear every answer pronounced, and see exactly which forms are costing you. WHAT'S INSIDE • Every JLPT level, N5 through N1, with verbs and adjectives drawn from real level lists • The Daily Five: five conjugations a day at your level, the same five for everyone, untimed. Keep your streak and accumulate "perfect days". • Timed Play rounds for pressure, untimed Study sessions for learning • Spaced repetition that quietly reschedules the forms you get wrong, so practice concentrates where it's weakest — and a Review tile on the home screen that serves the forms due today, ten at a time • Native-quality audio for every answer, plus on-device speech • Full conjugation tables and plain-English explanations of the verb groups — godan, ichidan, and the irregulars • Statistics that track accuracy and progress over time, and say what to work on next • Leaderboards for every JLPT level: this week and all-time • An optional account that backs up your progress and carries it to your other devices