Live preview
Run your app on a cloud iPhone, iPad, foldable or Android device streamed to your browser: turn it on, use the tools, read the logs, and know when it stops.
The preview panel runs your app on a real simulator in the cloud and streams it to your browser. You do not install anything.
Turn it on
- Open the preview and press Turn on simulator.
- Choose the device: iPhone, iPad or Duo (a foldable with Front, Book and Laptop views).
- Wait while the app builds and launches, then use it like a phone.
The first start builds your project. After that, every change rebuilds and relaunches the app.
Platforms
The bar at the top of the workbench switches between your iOS and Android apps. The + button adds the other platform to the project. Android uses a cloud emulator.
Preview tools
The toolbar above the device offers:
| Tool | What it does |
|---|---|
| Record video | Records a video of the device |
| Screenshot, add to chat | Captures the screen and attaches it to your next message |
| Select Elements | Tap something in the running app to pick it, then ask the agent to change exactly that element |
| Simulator settings | Device and display options |
| Rebuild and install the latest version | Rebuilds and relaunches the app with your newest changes |
| Stop the simulator | Turns the simulator off |
| Run on your device | Starts the install on a real phone with Companion |
When it stops
- After 3 minutes without interaction. A countdown appears for the last 30 seconds; touch the device to keep it on.
- When you turn it off.
- When your plan's usage limit is reached. The message says which limit it is and when it resets.
- When another session takes over.
Turn the simulator off when you finish testing: it uses your plan's usage while it runs.
App logs
Open the logs panel to see build errors, launch failures and runtime messages from the running app. The agent can read the same logs: ask "check the app logs and fix the crash".
Usage
The simulator and each build use your plan's usage. On Free this comes from your one-time trial. See Plans and usage.
Real phones
The simulator is separate from installing on a phone. Use Companion for that.