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Cue App

2023

React NativeNext.jsTypeScriptExpoFirebase

What it is

Cue is a cross-platform numerology app that runs on iOS, Android, and Web from a single codebase.

Numbers

  • 90% code sharing across iOS, Android, and Web
  • 50% faster feature releases vs platform-specific development
  • 4-person team with full technical ownership
  • 3 platforms from one codebase

How it's built

React Native with Expo handles mobile, Next.js handles the web. The architecture keeps business logic and UI components shared, with thin platform-specific layers only where native capabilities require it.

The main technical choices:

  • Expo managed workflow for simplified builds and over-the-air updates, no ejecting needed
  • Firebase for the backend: real-time database, auth, and cloud functions
  • Shared component library so the design system renders correctly everywhere
  • Feature flags for gradual rollouts and A/B testing across platforms

Running the team

I set the code quality standards, run reviews, and handle performance optimization across all three platforms. I also work with the product side on roadmap prioritization, making sure technical decisions line up with what the business actually needs.

Gallery

Cue App 1
Cue App 2