• 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
  • Introducing
    Proto.io V5
    Create animated interactions easier and faster, make UI items draggable, apply new touch, mobile and web compatible gestures and start capturing data and doing simple calculations.
    V5 latest features
  • 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
  • Preview your prototypes natively
    You can now preview your prototype on an iOS or Android device natively, without obstructions and irrespective of the device it was designed for! Download the free app.
    Learn More

Awesome prototypes for any device

Turn your wireframes and mobile mockups 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

Loving @protoio for prototyping my mobile app
Great work @alexispiperides and team with @protoio! Best prototyping tool on the web. Must have! http://t.co/uvrcSRlIVh
@protoio Digging the recent changes guys, keep it up!
The more I use @protoio the more I love it. Our team decided to use it for our capstone project. Great features and great support.
Finally spending some time with @protoio. Robust set of tools for a protoyper. Will get a lot of use out of this.
Newly converted proto.io user. Great user interface, perfect for new prototypes across mobile, tablet or browser: http://t.co/lEYmiDnGLy

Stay in the loop

#2 Facebook Paper – Prototyping the most popular apps!

23 July, 2014

Proto.io “Prototyping the most popular apps” is a series of videos where we recreate popular UI’s and interactions with Proto.io.

From the instructor (Constantinos Demetriadis):
For the second installment, I replicated Facebook’s Paper app, and more specifically, how the front page carousel works. Changing sections triggers the stories to scroll, and that was something I wanted to see happen in Proto.io.


Facebook Paper prototype

Proto.io Paper ep.1
For the first episode I worked on the carousel and the pager.

Keep reading