Build Your First App with Claude Code in 20 Minutes (The Right Way)

Most AI app tutorials hand you a website and call it an app. In about 20 minutes, I build the real thing with Claude Code: a React Native app running on iOS and Android with a real-time backend. Tasks added on one phone appear on the other instantly, no login needed.

Rule number one, and I stick to it in the video: never let AI write code before it knows what it's building. Plan mode first, code second.

What's inside

• Scaffold a mobile app and backend together with create-instant-app
• Run it on real devices instantly with Expo Go and a QR code
• Install Claude Code skills for Expo and Instant DB
• Plan in plan mode before generating anything (saves tokens too)
• Build a shared to-do list with emoji, status, and a bottom sheet
• Sync data across devices free with Instant DB

Resources

BookFrom Idea to App Store with Claude Code

The full mental model behind this workflow, from idea to a shipped app. No code required.