The fastest teams build the UI first and the backend last. Design the entire experience on realistic mock data, put it in front of users, and only invest in infrastructure once the product proves itself. Here's the workflow.
Why prototype-first wins
- You get a clickable app in days, not weeks.
- Stakeholders react to a real, tappable product instead of static mockups.
- You avoid building APIs for screens that change or get cut.
The Expo setup
Expo + expo-router gives you instant iOS/Android runs and file-based navigation. Keep your fake data in a single module so every screen reads from one source of truth — that becomes your API seam later.
Start from a finished prototype
This is exactly what our React Native templates are: complete, demo-ready apps running on mock data. Instead of building the prototype, you buy one that matches your domain — a job app, a banking app, a delivery app — and start iterating on a real product immediately.
The path to production
- Customise the UI and copy on mock data.
- Test it with real users in the simulator or via Expo Go.
- Swap the mock-data module for your API.
- Ship.
Prototype-first isn't cutting corners — it's sequencing the work so you learn before you build. Explore Expo app templates and have a demo-ready app by Monday.