🔵 New Cards (Blue)
Words you haven't studied yet. Start here to learn new vocabulary. Cards appear immediately for first exposure.
🟡 Learning Phase (Orange)
Cards move here after first attempt. Review again in 30 minutes, then 1 day. This reinforces initial learning.
🟣 Review Phase (Purple)
Well-learned cards reviewed every 3-7 days to maintain memory. The system adapts intervals based on your performance.
🟢 Mastered (Green)
Fully learned words reviewed every 2+ weeks. You've got these down! They appear less frequently but stay fresh.
🧠 Spaced Repetition Science
This system uses scientifically-proven spaced repetition intervals to optimize long-term retention. Cards appear just as you're about to forget them, strengthening memory pathways.
🎯 Adaptive Batch System
Quiz sessions adapt to your performance with batches of 3-12 questions. Better accuracy = longer sessions. Struggling = shorter, focused practice.
🎮 Quiz Modes
Multiple Choice: Standard recognition practice
Listening First: Audio-based learning
Mixed Challenge: Both Japanese→English and English→Japanese
Speed Challenge: 8-second time pressure for fluency
Kanji Only: Focus on character recognition