# simbeam

> Remote control for the iOS Simulator running on a Mac: reach into it from an
> iPhone, iPad or any browser — taps, swipes and keyboard — with the server
> handling signalling only, never the media. Built for developers who write iOS
> code remotely (often with AI help) but can't see it run without a slow
> build-to-TestFlight loop.

simbeam mirrors an iOS Simulator running on a Mac to a native iOS/iPadOS app,
with any modern browser as a fallback client. Live H.264 video and input flow
directly between devices over an encrypted WebRTC connection; the signalling
broker only helps peers find each other and never sees the screen or the input.
Pairing is address-bar based and backed by Ed25519 identity keys held on the
devices.

## Key facts

- Clients: native iOS/iPadOS app (primary, App Store, free, iOS 16+); web app
  (any WebCrypto + WebRTC browser) as a fallback.
- Transport: WebRTC peer-to-peer, encrypted; server does signalling only.
- Pairing: open the pairing link the Mac daemon prints, confirm once — no accounts.
- Problem it solves: verifying and debugging iOS apps remotely without a
  minutes-long TestFlight round-trip, the way web dev already works.
- Open source; the daemon and broker live in the main repo.

## Links

- iOS/iPadOS app: https://apps.apple.com/app/simbeam/id6788377942
- Web app (fallback client): https://app.simbeam.dev
- Source (daemon, broker, protocol): https://github.com/kei-sidorov/simbeam