Kotoba

A browser-based Japanese language learning toolkit with powerful analysis and practice tools

Text Breakdown

Analyze Japanese sentences in detail

Get comprehensive breakdowns of grammar, vocabulary, and language nuances powered by Google's Gemini AI.

Vocabulary Practice

Practice with your JPDB vocabulary

Create sentences using your vocabulary decks and get AI-powered feedback to improve your Japanese writing skills.

Browser-Only

No server, no login required

Everything runs in your browser. No accounts to create, no servers to connect to. Just open and start learning.

"Improve your Japanese through instant analysis and targeted practice"

Browser-based · Open Source · No Account Required