What this demo shows
The three steps above replay a real session in VibeSafe Builder: building a habit tracker from one
sentence, asking for a login form, and rolling back when the security scan objects. The builds are
pre-recorded so the demo needs no account, no API key and costs nothing, and so every visitor sees the
same thing. The costs and scan results are taken from real builds of these same apps.
Step 1 — the cost appears before the build runs
Every generation shows an estimate first, and you set a hard cap it will not cross. Most single-file
apps run between $0.05 and $0.20. Failed generations are tracked separately, so a build that goes
wrong never counts against your spend. Where your AI
credits actually go breaks the numbers down.
Step 2 — the security scan blocks a leak
Asking for a login form produces code with a hardcoded key in it, which is exactly how AI-built apps
leak credentials in the wild. The scan catches it and refuses to publish. Launch Check goes further and
opens the app in a real browser to catch errors a scan cannot see.
See everything that gets checked.
Step 3 — every version can be rolled back
Each change is a version with a diff, so an edit that breaks the app is one click from being undone.
Nothing is lost when you roll back; later versions stay in the list.
Why the AI gets stuck repeating a fix covers what happens when a
change keeps failing.
What the real builder does that this demo cannot
- Builds from your own description instead of a script, on Claude Opus 5
- Publishes your app to a shareable link, or exports it as a single file you own
- Pushes a multi-file React project to your own GitHub repository and deploys to your own Vercel account
- Collects form submissions and stores data shared between visitors
- Starts from 16 free templates at zero token cost
Ready to try the real thing?
Your first build is free — no card and no API key. If you have never built an app this way before,
how to build your first app with AI is the
place to start, and the pre-launch checklist covers
what to check before you share it. The user guide explains the builder
screen by screen, and pricing lays out both plans.
Open the builder →