Hicham Ayat GimenezFull-stack developer
All work

Mobile & web app · 2026

Kotoba

A Japanese course built as an app: missions, a daily ten-minute session, speaking practice and mock exams.

Client
Personal project
Role
Design & development
Status
Private
Year
2026

Built with

  • Next.js
  • React
  • TypeScript
  • PostgreSQL
  • Drizzle
  • Capacitor
  • Claude API
  • Tailwind CSS
  • Vitest
Kotoba mission screen: Introducing yourself

Overview

I wanted a Japanese course that gets you speaking from the first day, so I built one for myself.

What I built

  • 36 missions from first greetings to JLPT N4
  • A daily session that brings back what you are about to forget
  • Listening, shadowing and pronunciation practice
  • N5 and N4 mock exams and a placement test
  • An optional AI tutor for free conversation
  • Android app and web, in English and French
Hiragana practice grid in the night theme
Vocabulary list with audio for each word
Mission five, Getting to know someone, in the night theme
Free practice menu: shadowing, listening, sentence builder, verb forms
Kana practice · Vocabulary · Night theme · Free practice
Next projectMeeso CoffeeA website for an Auckland specialty café, with 3D drinks I modelled in Blender and a cinematic scroll.