FSRS Spaced Repetition
The most advanced scheduling algorithm available. Reviews are timed precisely for optimal retention with minimal effort.
学習の新時代
A modern learning system that adapts to you. Study kanji, vocabulary, and grammar with spaced repetition, AI explanations, and neural text-to-speech — all in one beautifully crafted workspace.
機能
A complete toolkit designed for serious learners. No fluff, no gamification — just effective study tools that respect your time.
The most advanced scheduling algorithm available. Reviews are timed precisely for optimal retention with minimal effort.
Kanji, vocabulary, grammar, radicals, names, numbers, sentences, and custom decks. Each mode tailored for its content type.
Stuck on a kanji or grammar point? Get instant, contextual explanations powered by AI — tailored to your current level.
Hear native-quality pronunciation for every word and sentence. Multiple voice styles to match different contexts.
Your progress follows you everywhere. Study on desktop, continue on mobile. Data encrypted and always backed up.
Interactive animations show exactly how to write each character. Practice along or watch and learn.
Track your retention rates, study streaks, and weak points. Understand your learning patterns with detailed insights.
Add your own vocabulary, import from Anki, create personal notes. The system adapts to what you're learning.
使い方
No complicated setup. Just open the app and start learning.
Select from kanji, vocabulary, grammar, or any of the 6 study modes. Start with what matters most to you.
The FSRS algorithm schedules your reviews at the optimal time. Just show up and let the system guide you.
Consistent small sessions add up. Track your retention, celebrate milestones, and watch your Japanese flourish.