Koji - Learn Japanese & Kana
Hiragana, Katakana & Kanji
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
New: Learn hiragana, katakana & kanji with memory tricks that actually stick. Start your free trial today.
Learn to read Japanese — in days, not years. Koji turns hiragana, katakana, and kanji into a game, with memory tricks and native audio that make every character stick.
No experience needed. Start from zero today.
WHAT YOU'LL LEARN
6 courses. 63 lessons. From your first character to real Japanese.
Hiragana — all 46 characters, plus dakuten & handakuten
Katakana — all 46 characters for foreign & loanwords
Kanji N5 — 75 essential kanji with meanings and readings
Vocabulary — family, food, animals, time, and more
Phrases — greetings, ordering food, directions, polite speech
Numbers — counting to 10,000 and telling time
Every character comes with a memory trick that makes it impossible to forget. No more staring at a chart hoping it clicks.
HOW IT WORKS
Meet each character with native speaker audio and a visual hint. Then lock it in with quiz types that keep you sharp:
Multiple choice — pick the right romaji or kana
Matching — pair characters to their sounds
True or false — trust your instincts
Word builder — arrange tiles to spell real words
Questions rotate constantly, so you're never bored.
STAY MOTIVATED
Earn XP and stars after every lesson
Build daily streaks that keep you coming back
Watch your accuracy climb over time
A clear path shows exactly what to learn next
BUILT FOR BEGINNERS
Koji starts from absolute zero and builds up one step at a time. Tap any character to hear correct pronunciation from day one. Memory hints use familiar English associations so Japanese sticks faster than flashcards ever could.
By the end, you'll read hiragana, katakana, and basic kanji — and recognize hundreds of real Japanese words and phrases.
KOJI PREMIUM
Free to start. Upgrade for unlimited hearts, no ads, 2x faster learning, and full access to every course. The annual plan includes a free trial — cancel anytime.
Questions? support@kojiapp.com
Terms of Use: https://www.apple.com/legal/internet-services/itunes/
Bug fixes and performance improvements.
• Sign in once and stay signed in — your progress is always saved
• Guest mode now works seamlessly across app restarts
• Annual subscription now shows your 3-day free trial upfront
• Improved subscription details and legal information
• Performance improvements and stability fixes
The developer, DAVIDE ACOSTA, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Contact Info
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- DAVIDE ACOSTA
- Size
- 98.3 MB
- Category
- Education
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Koji Premium Annual $49.99
- Koji Premium Monthly $9.99
- Copyright
- © 2026 Koji
