Your PM ships without a single back-and-forth.
They iterate on a prototype directly in the live running app — with an agent — until it looks exactly right. Then they share a simulator link with customers. No installs. No waiting. Instant feedback.
Design. Build. Preview.
Together.
Your whole team: PMs, designers, devs. All working on the same running app. The agent does the work. Everyone ships.
Joining means you accept emails and the privacy policy.
The friction didn't go away. It moved.
You gave everyone AI tools. The bottleneck is now the handoffs between them.
Your designer iterates on real code, not mockups.
They make changes directly on the running app — fonts, spacing, flows. The handoff is a Pull Request, not a Figma export followed by a ticket followed by a build wait.
Your mobile dev runs five agents, not five Xcodes.
Instead of grinding through features one at a time locally, they fire up five autonomous agents working in parallel — each on its own cloud Mac, pre-built, caches warm. They spot a bug in the browser, tell the agent directly, and it's fixed before the ticket is filed.
The workflow runs at AI speed. Not just the code.
Every role on your team gets a live simulator and a direct line to the agent. The handoff is a Pull Request. What Vercel did for web, stag does for mobile — persistent cloud environments, instant preview links, build loops that don't punish you for iterating.
Golden State VMs
Each VM remembers everything. No reinstalling the world on every build. Resume in seconds, build in 30.
The "Vercel" for Mobile
What Vercel did for web, stag does for mobile. Instant preview links. Persistent environments. Build loops that don't punish you for iterating.
Untethered Review
Review PRs and interact with simulators from your phone while getting coffee.
Questions?
Is this a CI/CD platform?
No. CI resets the world on every run — that's why it's slow. stag keeps your environment alive between builds. Think of it as your team's always-ready cloud Mac, not a pipeline.
How do waitlist updates work?
We email you when your spot opens and when there are important product updates. You can unsubscribe anytime from the link in any email.
Do you support Android?
Not yet — and that's intentional. We're building the best possible iOS experience first, because doing both at once means doing neither well. Android is coming in late 2026. iOS-first teams: stag is ready for you now. Android teams: join the waitlist and you'll be first.
How does the 'Agent' part work?
Your agent calls stag when it's ready to build. stag resumes the VM, runs the build, and hands back a preview link and logs in about 30 seconds. The agent sees the result and keeps going. No human in the loop unless you want one.
Your whole team. Working on the same running app.
No more handoffs. No more waiting. The workflow at AI speed.
Join the private beta. Be one of the first mobile teams where every role ships.
Join the Private BetaEARLY ACCESS FOR FOUNDING TEAMS