Master Japanese Like Never Before
The only flashcard app built specifically for Japanese learners who are ready to level up
Available on web • Desktop & mobile apps coming soon
Why Japanese Learners Choose Kotobaten
Made for Japanese
Finally, an app that gets it
Every feature is designed around Japanese's unique quirks—from kanji readings to grammar patterns. No more fighting with generic flashcard apps.
Smart Flashcards
Your words, your way
Create custom flashcards that actually make sense. Add context, readings, and personal notes that stick.
Lightning-Fast Dictionary
Look it up, learn it, own it
Built-in Japanese dictionary with instant search. Found a new word? Add it to your collection in one tap.
AI-Powered Practice
Practice that adapts to you
Get AI-generated multiple choice questions and sample sentences tailored to your learning level.
Learn Anywhere
Web now, everything soon
Start on the web today. Desktop (Windows, macOS) and mobile (Android, iOS) apps launching soon.
Trusted by Japanese Learners Worldwide
From JLPT success to daily learning habits, see how Kotobaten transforms Japanese learning journeys
Kotobaten's vocabulary system was a game-changer for my JLPT N2 prep. The spaced repetition helped me retain over 2,000 kanji compounds that showed up on the actual exam. I finally passed after two previous attempts!
Aisha Patel
Mumbai, India
JLPT N2 Passed
I struggled with consistency until I found Kotobaten. The daily vocabulary practice became part of my morning routine. One year later, I have a 365-day streak and can finally read manga without constantly looking up words.
Marcus Johnson
Chicago, USA
365-day streak
The AI-generated practice questions were incredibly similar to the real JLPT N1 vocabulary section. Kotobaten helped me master the nuanced differences between similar words that make or break the exam.
Elena Rossi
Milan, Italy
JLPT N1 Passed
As a Japanese-Brazilian, I thought I knew Japanese well. Kotobaten helped me learn business vocabulary I never encountered growing up. Now I can confidently participate in meetings with our Tokyo office.
Hiroshi Tanaka
São Paulo, Brazil
Business Japanese Proficiency
The ability to add personal notes and context to each word was perfect for my learning style. I created connections between Arabic and Japanese that helped me remember vocabulary for my N3 exam.
Fatima Al-Zahra
Dubai, UAE
JLPT N3 Passed
Working long hours in finance, I needed something flexible. Kotobaten's quick review sessions fit perfectly into my tube commute. Small daily efforts over 300+ days transformed my Japanese comprehension.
James Thompson
London, UK
300+ day streak
Create and Review Flashcards Designed for Japanese Learners
Experience the power of purpose-built Japanese learning tools. Our interface understands the complexity of Japanese characters and provides the context you need to truly master the language.
Practice On the Go with Our Upcoming Mobile Apps
Take your Japanese learning everywhere. Our mobile apps (launching soon) will sync seamlessly with the web version, letting you practice during commutes, breaks, or whenever inspiration strikes.
Android • iOS • Windows • macOS
Ready to Transform Your Japanese Learning?
Join advanced learners who are already mastering Japanese with Kotobaten
Free • No credit card required