Mobile App Developer

Simple apps
for everyday life.

Building thoughtful mobile experiences for iOS and Android.

Apps

doneday icon

doneday

Habit tracker that helps you build streaks and stay consistent every day.

Download on the App Store Get it on Google Play

About

TERAKEN is an independent mobile app developer based in Japan, with over 20 years of experience in system development, infrastructure, and technology management.

After years of building enterprise systems across industries including government, healthcare, and education, TERAKEN was founded to pursue a simpler goal: creating clean, useful apps for everyday life.

Every app is designed with care — minimal by intent, built to last, and focused on solving real problems without unnecessary complexity.

iOS Android React Native Expo AWS Java TypeScript 20+ years experience
Get in touch