Working software, written by AI, described by you

Calculators, dashboards, booking systems, trackers, generators, internal tools. The AI writes real, working code — interactive, stateful, and live on a URL you can share.

Build this free →No card required

Try a prompt like

“A mortgage calculator with sliders for price, deposit and rate, a monthly payment breakdown, and a chart”

Why build it with Weblly

It actually works

Not a mockup — working JavaScript with state, logic, and persistence. Multi-view apps with navigation included.

From idea to shareable URL

Describe the tool, save, send the link. No app stores, no installs, works on every device.

Iterate like a product team

"Add an export button", "remember the user's last inputs", "add a dark theme" — ship improvements by chatting.

Embed anywhere

Tools live on their own URL, so you can link or iframe them from your existing site.

Ideas people start with

ROI / pricing calculators for your sales page →Booking and appointment systems →Habit trackers and to-do apps →Quote generators for service businesses →Quiz and assessment tools →Team dashboards with charts →

Common questions

Is it real code or a prototype? +

Real code. The AI writes complete HTML, CSS and JavaScript with working logic. Data can persist locally in the browser via localStorage.

Can apps store user data? +

Apps persist data in the user's browser out of the box. For shared/server data, connect services via Integrations — deeper backend support is on the roadmap.

How complex can apps get? +

Multi-view apps with routing, state, charts, and game logic all work well. If you can describe the behavior clearly, the AI can usually build it.

Your web apps & tool could be live tonight

Start building – free