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

Support for 3rd Generation iPad Pro

Ratings and Reviews

Alekplay ,

Great companion to a great product

Principle as a whole is a game changer, can't praise it enough. But my review is about this specific iOS companion. Super easy to use, just plug it in and you're all set. One minor drawback is that it should be easier (or at least more obvious) to the user how to restart the animation. Also wifi connection capabilities would be great, but it still deserves a solid 5 stars!

Areus Wade ,

Killer to pair with Desktop app.

Honestly with the slightest bit of love and attention to detail the desktop application provides, you can make anything feel real.

Hoping for a wider array of video support in the future. Unsure which codecs that support transparency are usable in Principle Mirror. I’ve had no luck so far, but it’s honestly the only con I could identify.

Looking forward to more from Daniel!

Peakok ,

Everything works awesome!... Except type

Everything works just like it should and fluidly as well. Flipping fantastic.

The one big issue I have is that non system fonts are not being packaged and sent to the device. When I view my design on device my fonts are being converted to Helvetica. It's kind of a big issue for me because the prototype is no longer fit for client consumption. Hopefully this will be fixed in on of your first updates!


Daniel Hooper
1.5 MB
Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© Hooper Software LLC


  • Family Sharing

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

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