App Builder

Lay out your whole app. Then let your agent build it.

Screens on one canvas, connected by real navigation. One codebase for iOS and Android: Liquid Glass on iOS 26, Material 3 Expressive on Android.

Free to design, no account needed. Generating the code is the paid part.

What it does

A design tool that knows it is making an app. Not a picture of one.

  • 01

    Every screen on one canvas

    See the whole app at once, zoom in to edit a screen, and drag blocks from the library onto it.

  • 02

    Arrows are navigation

    Draw an arrow from a button to a screen. It becomes a tab, a pushed screen or a pop-up in the real app.

  • 03

    Preview before you build

    Tap through the app the way it will run, switch between iOS and Android, and fix what feels wrong.

  • 04

    Hand it to your agent

    One line to paste into your coding agent, which builds an Expo project with your screens.

Start from a template

Open the App Builder with an app already in it.

See every template

Beta Expect rough edges and changes. The docs cover every step, and the FAQ has the requirements.