Proto.io now available as a Chrome App. Click here

So what's new in proto.io version 4?

Intuitive new editor UI helps you build your prototypes even faster!

Silly-faster mobile prototyping animations now even 5x Faster!

We've added too many new features to list - here are a few of our favorites.

  • Draggable properties panel
  • Copy n' paste interactions
  • Quick interactions
  • Inline text editing
  • Live color update & rgba support
Check out the full feature list
So what's new in proto.io version 4?
  • Silly-fast mobile prototyping.
    Create fully-interactive high-fidelity prototypes in minutes that look and work exactly like your app should.
    Get started for FREE
  • Prototype for any device
    That includes smart TVs, gaming devices, refrigerators, alarm clocks, cars and any other interface you can think of
    Get started for FREE
  • Make any item animated
    The first ever prototyping tool that supports full feature animations
    Get started for FREE
  • Actual device testing
    Test your mobile prototypes on the actual device and see exactly how your app will work and look
    Get started for FREE

Awesome prototypes for any device

Turn your wireframes and designs into amazing interactive prototypes. Filled with rich media, animations and touch events.

Test your prototype on the actual device

Swipe, tap, rotate and examine your app inside out the same way your end user will.

Share, Annotate and get valuable feedback

Share your prototype with colleagues and friends to collaborate and review.

Amazing tools, amazing results

Our demos speak for themselves. View them all here.

In good company

World class mobile prototyping

What our users say

Been living in @protoio last few weeks. It's pretty hot.
@machado Andrew Machado
I’ve been testing @protoio to wireframe a new app and I’m impressed. Very well designed and easy to use. http://t.co/C7Iv65nCRv
@tkenny Tōm Kēnny
We strongly recommend using http://t.co/c6ZxDBK2dG for prototyping! Great tool for ux'ers!!!
@LumiosUX Lumios UX
Proto.io is pretty fly.
@michaeldamboldt Michael Damboldt
wow... the new update to #Proto.io is awesome.... still the best mobile prototyping tool.... period.
@BobbyBurdette Bobby Burdette
From a meeting room discussion to a live demo to a customer in < 2 days thanks to @protoio!
@gildror gildror

Stay in the loop

Proto.io 4 makes prototyping faster and better than ever!

23 April, 2013

Proto.io 4

We are very excited here at Proto.io to announce our latest major release Proto.io 4! We consider Proto.io 4 a breakthrough, not because of its abundance of new features but for the new UI that will allow users to prototype faster and better than ever. Revamping the editor UI to focus on usability and user experience was a long standing goal for us, one we have been working on for some time now.

Keep reading