Complete JapaneseMastery Tools
From basic Kana to JLPT N1, Zen Kana provides the structured content and smart technology you need to achieve fluency.
Massive Vocabulary Library
5,986 words across all JLPT levels
A complete database of vocabulary words meticulously organized by JLPT proficiency level.
Structured Learning Paths
Guided progression for every goal
Kana Path
Master the writing systems first. Systematic introduction to all 125 Hiragana and 125 Katakana characters.
JLPT Path
Progress through vocabulary levels from N5 up to N1. Each level builds on the previous one.
Custom Presets
Create your own study sets. Mix and match specific rows, levels, or problem areas.
Smart Technology
Spaced Repetition (SM-2)
Our implementation of the proven SuperMemo 2 (SM-2) algorithm ensures you practice exactly when your brain needs reinforcement.
- Real-time due item tracking
- Automatic difficulty adjustment
- Priority-based scheduling
Advanced Accessibility
Voice input & customization
- Voice Input: Speak your answers for hands-free practice
- Native TTS: Authentic Japanese pronunciation for every word
- Dark Mode: Automatic system theme integration
- Text Scaling: Adjustable font sizes for comfort
Free & Fair Ad Model
We believe education should be accessible to everyone. Zen Kana is free to download and use, supported by a respectful ad experience.
Non-Intrusive
Ads only appear after every 2nd completed practice session. Never during learning.
Skippable
Brief interstitial ads that can be quickly dismissed to get back to studying.
Ad-Free Web
The browser-based version of Zen Kana is completely ad-free.
Seamless Cloud Sync
Real-Time Backup
Progress, settings, and stats automatically synced via Firebase.
Session Recovery
Pick up exactly where you left off, even if you switch devices mid-session.
Privacy First
Cloud features are optional. Use anonymously or sign in with Apple/Google.
Ready to Start Your Japanese Journey?
Experience the most comprehensive free Japanese learning app available.