React Native Playground

Write React Native code in your browser. Run it on your local iOS Simulator instantly. Zero cloud. Zero config.

Get StartedOpen Playground

How It Works

Step 1

Start the Runner

Run npx sim-bridge in your terminal. It handles everything automatically.

Step 2

Write Your Code

Use the web editor to write React Native components. Full syntax highlighting and multi-file support.

Step 3

Run on Simulator

Click Run. Your code syncs to the local runner and launches on the iOS Simulator.

Zero Configuration

The runner automatically installs Expo CLI, creates workspaces, and boots the simulator.

Local Execution

All code runs on your machine. No cloud servers, no accounts, no data leaves your computer.

Ready to start?

You'll need a Mac with Xcode installed. That's it.

Get Started