How Zen KanaAccelerates Learning
Discover the science-backed methodology that makes Zen Kana the most effective way to master Japanese writing systems.
Choose Your Path
Select from carefully curated difficulty presets or customize your own selection. Our presets range from essential beginner words (40 items) to comprehensive JLPT N5 coverage (477+ items).
- Beginner: Essential Words, Survival Japanese (~40-80 items)
- Intermediate: Daily Life, Travel Essentials (~100-150 items)
- Advanced: Comprehensive Vocabulary (250+ items)
Beginner Presets
Essential Words (38), Beginner Complete (72)
Intermediate Presets
Common Vocabulary (150), Travel Essentials (100)
Advanced Presets
JLPT N5 Complete (400+), Custom Selection
Learn Before Testing
Our optional Learning Mode introduces new characters and vocabulary with structured familiarization before you start practicing. This reduces frustration and builds confidence.
- Character introduction with visual and audio presentation
- Interactive study cards with progressive revelation
- Seamless transition to practice mode when ready
Interactive Study Card
Hiragana: あ
Romaji: a
“The first vowel sound in Japanese, pronounced like ‘ah’ in ‘father’”
Smart Practice
Our spaced repetition algorithm presents items exactly when your brain needs reinforcement. The system tracks your performance and automatically adjusts difficulty and timing.
- SuperMemo 2 algorithm for optimal scheduling
- Priority-based item selection during sessions
- Automatic session saving and recovery
- Voice input and text-to-speech integration
Track Progress
Comprehensive analytics help you understand your learning patterns. View detailed statistics, session summaries, and performance trends across all your devices.
- Real-time accuracy rates and response times
- Individual item performance tracking
- Cross-device synchronization with Firebase
- Historical trends and learning insights
Session Summary
Great progress! You’re improving consistently.
The Science Behind Spaced Repetition
Optimized Memory Retention
Spaced repetition is based on the psychological concept of the “forgetting curve” discovered by Hermann Ebbinghaus. By reviewing information at increasing intervals, we strengthen memory pathways and achieve long-term retention with minimal time investment.
- First review: 1 day after learning
- Second review: 3 days after first review
- Intervals increase based on performance
Adaptive Difficulty System
Our implementation of the SuperMemo 2 algorithm adjusts the difficulty factor for each item based on your performance. Items you struggle with appear more frequently, while mastered items have longer intervals.
Performance Impact:
Experience Scientific Learning Today
Join thousands of learners who are mastering Japanese writing systems efficiently with Zen Kana.