Start simple. Grow into more when you need it.
Every app starts as one portable file with zero setup. When a request needs more — accounts, shared data, a real codebase — the builder grows into that instead of hitting a wall.
✅ Good for
- Prototypes and MVPs to test an idea fast — download a single HTML file and it just works, no install, no build step
- Internal tools, calculators, trackers, generators
- Multi-user apps with shared or per-visitor data — ask for it and the builder switches to a real backend behind the scenes
- Bigger builds — start a multi-file React project when a single page isn't enough, push it to a repository you own on GitHub, and deploy it to your own Vercel account when it's ready for the world
🚧 Not (yet) for
- Payments, or business logic that has to run somewhere the user can never see the code
- Custom server-side endpoints beyond the built-in data backend — no arbitrary server code, yet
Outgrow it? A single-file app is a plain file you can hand to a developer — no export step, no proprietary format. A React project is real, ordinary code in a repository you own. No lock-in either way.
See what happens after you hit send
A guided walkthrough of the real workspace — same tabs, same copy, same flow you'll see in the builder.
This is a guided illustration of the real interface, not a screen recording — open the builder to try it for real.
Build with more control
See the cost, inspect the result, and decide when it is ready to share.
Failures don't count
Failed generations are tracked separately from your build spend — the meter shows exactly what went into your app versus what the AI wasted.
Cost shown before you spend
A live estimate appears before every generation, with a hard spend cap.
Every change is a diff
Roll back to any version with one click.
The AI admits when it's stuck
Two failed fixes in a row and it re-diagnoses from scratch.
Publish & share
One click puts your app live at a shareable link — security-checked before it goes out.
Security scan on every build
Hardcoded keys, eval(), insecure requests, data exfiltration — checked on every generation using the same kind of security check as vibesafe.info, pass/fail before you share. See exactly what gets checked.
Your app is a file you own
Full code always visible. Download your app as a single portable HTML file and run it anywhere — the user guide walks through editing, publishing and exporting it.
Or skip the blank page — 16 free templates
Instant v1, zero generation cost. Pick one, then keep chatting to make it yours.
📈Sales DashboardRevenue, orders and a 7-day chart
🔥Habit TrackerDaily habits with streaks
🧾Invoice GeneratorLine items, totals, printable
🗂️FlashcardsStudy any subject, self-graded
❓Quiz MakerMultiple-choice quiz with scoring
🚀Landing PageOne-page site for a product
📅Booking FormAppointment requests, saved locally
⏱️Focus TimerPomodoro-style work/break sessions
💰Expense TrackerLog spending, totals by category
🍳Recipe BoxSave recipes with ingredients & steps
✅To-Do ListTasks with priorities and due dates
🔐Password GeneratorStrong random passwords, copy to clipboard
📐Unit ConverterLength, weight, and temperature
🎉Countdown TimerCount down to any date or event
📊Budget PlannerPlan monthly income vs. expenses
📇Contact BookSave names, numbers, and notes
Pricing
Your first AI build is free — no API key or card needed (it runs on a lighter AI model). After that, bring your own key with no subscription and no markup, or go Managed for one flat monthly fee with no key required.
- All 16 free templates, zero tokens
- Unlimited generations at your own pace
- Full version history, diffs & rollback
- Security scan + Launch Check on every build
- Publish to a shareable link
- Failed generations never billed to your build spend
- Everything in Bring your own key
- No Anthropic account required
- Up to $10/mo of generations covered — switch to your own key any time if you go past it