Apps / Works

Product work, mobile apps, freelance and indie development.

A concise overview of EGI Studio's practical development areas based on professional and independent work. Private projects are anonymized and summarized at a high level.

Generative AI product

Generative AI conversation product

Lead engineer

A new product designed to draw out employee feedback through anonymous posts and conversations with generative AI, then report insights to management. Yasuyuki contributed as the main engineer through productization, using a Flutter app, a Next.js admin web app, React / TypeScript, AWS, and Docker.

FlutterNext.jsReactTypeScriptAWSDocker

Freelance development

Ocean information mobile app

Development member

Mobile development for an ocean forecasting service used by fisheries. Work included iOS and Android features with React Native and TypeScript, plus GitHub Actions and test-code improvements.

React NativeTypeScriptGitHub ActionsiOSAndroid

Indie apps

Independent Flutter iOS apps

Shipped

Two Flutter-built iOS apps released on the App Store. Yasuyuki handled UI design, implementation, and Apple submission end to end.

FlutterDartiOSApp Store