Kelvin Code spins up iOS simulator capsules in seconds, no VM. You watch live. Every session becomes reproducible evidence.
Disposable devices by cloning — no VM, no 100 GB downloads, no simulator windows popping up. We measured 3.3 s to clone and 16.1 s until the capsule is usable.
Claude, Codex or Cursor drive the device while you watch — Observe, Act, Verify, with every action on the record.
Every session seals a package — captures, the step by step and the verdict — that opens as a navigable artifact on your machine and runs again on a fresh capsule.
Kelvin Code is a developer tool for macOS. It installs and runs your mobile app on an iOS simulator inside your Mac, in disposable capsules — no VM, and no simulator window ever opens. It is for the people who build mobile apps and for the people who need to see the app working: engineering, product, design and QA.
The code never leaves your machine. What gets shared is the proof: whoever you call follows the session in a browser, touches the app running on your Mac, and gets the evidence of what happened — the captures, the step by step and the verdict, sealed so that nobody can alter them without it showing.
The app you download here runs on its own, with no account and no cloud. The shared side is Kelvin Code Cloud, in closed alpha by invitation, and signing in there only identifies who is entering: name and verified e-mail. Kelvin Code neither requests nor receives access to your Drive, Gmail, Calendar, contacts or repositories.