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.
Every feature answers a real complaint
We researched thousands of reviews of the big vibe-coding tools. Each thing users hate became a feature users get.
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