Prototyping & mockups (AI app builders)

The old prototyping ladder was Figma for the pretty version, then a begging session with engineering for anything interactive. AI app builders collapse that. You describe the thing in plain English and get back either a design you can share or, increasingly, a working app with real state, forms, and a database behind it.

The catch every PM learns in week two: these tools are priced in credits or tokens, and they burn fast when you iterate. The demo is cheap; the tenth revision is not. So match the tool to the job. If you need a picture to align stakeholders, a design-first tool (Figma Make, Google Stitch) is faster and cheaper than generating a full app. If you need something users can actually use in a test — real login, real data — a full-stack builder (Lovable, Bolt, Replit) earns its cost. And if you’re handing polished UI to engineers who already live in React, v0 is the cleanest bridge. Our pick below is the one that gets a non-technical PM to a shareable, working app with the least fuss — but read the weakness on each before you pour a month of credits into it.

We cut Uizard from this list: its free tier caps you at three generations on public-only projects, and at the paid tier the design-first job is done better by Figma Make and Google Stitch. Seven adoptable options beat eight with a filler.