simbeam

iOS Simulator, streamed

See and drive your iOS app from the browser.

simbeam streams a Mac's iOS Simulator over WebRTC. Tap, swipe and type on your running app from a browser tab or the iPadOS app — no cable, no second machine, no TestFlight round-trip.

Open the web app Get the daemon

The gap AI coding left open

You can write iOS code from anywhere now — even from a phone. You still can't see it run.

Web you verify in a tab in seconds. A native change means a build-to-TestFlight loop measured in minutes, sometimes tens of them. simbeam closes that loop: point a browser at your Mac's Simulator and watch the change land live.

How it works

Browser and iPad, first-class

Run it as a web app in any modern browser, or as a native iOS/iPadOS app. The iPad becomes a live, touchable window into the Simulator on your Mac.

Peer-to-peer by design

Video and input travel directly over an encrypted WebRTC connection. The server does signalling only — it never sees your screen or your taps. Pairing uses Ed25519 identity keys that stay on your devices.

Install, pair, ship

Start the daemon on your Mac, open the pairing link, confirm once. The Mac is saved and you're streaming — no accounts, no config files.

Start streaming.

simbeam is open source. Grab the daemon from the repo, then open the web app and pair.

Open the web app Get the daemon