Lab runs your app in the cloud, next to a coding agent that can edit it. Say what you want changed, see it build in the live preview, keep going until it’s right — then open the pull request. You can do the whole loop by voice.
A diff tells you what changed in the code. It doesn’t tell you whether the page looks right, whether the flow still works, or whether the fix landed the way you meant — and checking means pulling a branch and running it locally, which nobody does for a two-line copy change.
Four steps to eyeball one change. Enough friction that most small changes get merged on faith.
“Now make it a bit darker” should take seconds. Through a PR round-trip it takes a morning.
The person who cares most about the copy or the layout cannot run the app to see it.
Your repository boots in a cloud dev server with a live preview beside the conversation. Nothing to install.
Type it, or press ⌘O and say it. The agent edits the running app and the preview rebuilds in front of you.
Iterate as long as you like, then ask for the pull request. By voice, it reads the title back for a yes first.
Ask “what do you see?” or “show me the pricing page” and it reads the running app, rather than guessing from source.
“Now make it blue” works without restating what “it” is — and “just build, don’t narrate” makes it work in silence.
From anywhere in the app, “take me to the Lab” by voice opens it.
Lab is part of the paid tier, with Apps and ⌘O voice, and needs a repository connected in Settings → GitHub.
Free for up to 10 people, with 1,000 AI credits included. No credit card, no sales call, no onboarding deck.