Prototo vs Google Stitch.
Google Stitch is an AI design canvas from Google Labs that generates screens, links them into clickable prototypes and exports code or Figma layers. Prototo builds the prototype as a native iOS app and shares it as a link that runs natively on any iPhone in the free Prototo app.
| Prototo | Google Stitch | |
|---|---|---|
| Runs natively on a real iPhone from a link | Yes | No, clickable prototype in a browser |
| Output | Native iOS app | Designs plus exported code (HTML, React, SwiftUI and more) |
| Where you design | Claude Code or Codex beside a live iPhone preview | Infinite AI canvas |
| Best for | Feeling an iPhone app on a real device | Exploring layouts fast and exporting to Figma or code |
When to pick Google Stitch
When you want to explore many layouts on a canvas, hand designs to Figma, or export starter code.
When to pick Prototo
When the question is how the app feels in the hand: gestures, motion, haptics and scrolling on a real iPhone, shared with anyone as a link.
Keep reading
Download Prototo for Mac. Free to build, and viewers get the free Prototo app on iPhone.