Principle Mirror is the companion app to Principle for Mac, a tool for designing interactive interfaces. Principle Mirror can open Principle files from other apps or mirror Principle for Mac when plugged in.

“I just wanted to write to you quickly just to say — this. is. amazing. while I was watching the first tutorial I got tears in my eyes! seriously.”
Hugo Ahlberg
Designer, IDEO

"This tool is amazing, very well done."
Patrick Wong
Designer, Lyft

What’s New

Version 5.3

Support for iOS 13

Ratings and Reviews

4.2 out of 5
12 Ratings

12 Ratings

hamy89 ,

Works great, No Frills

Works exactly how you would expect. Perfect for presenting prototypes to stakeholders from your phone. Excited to see how this app evolves!

In the future it would be really nice to have Wifi updating, but is definitely not a deal breaker. Great app!

Jok36 ,

Please fix “open in principle” integration with Safari

If I want to share a .prd file with someone to test a prototype they are unable to open the file in their Principle app. I want to share a link to the .prd via Dropbox. But when they download the file on mobile safari and tap “Open with Principle” under share, the file does not open. Impossible to share prototypes with team or testers.

Dmore3306 ,

Works great but doesn’t work over WiFi

Pretty frustrating since most apple laptops don’t have a USB port anymore. It would be great to support over WiFi


Daniel Hooper
1.1 MB

Requires iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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