Principle Mirror

Principle Mirror

Interaction & UI Design

14 ratings
41 reviews
Free

Details

  • Released
  • Updated
  • August 31, 2015
  • June 4, 2025
Principle Mirror screenshot #1 for iPhone
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About

Design interactive user interfaces with this companion app for a popular Mac design tool. Seamlessly open Principle files or mirror your Mac's design work directly to your device.

Open Principle files
Mirror Principle for Mac
Interactive UI design
Companion app functionality
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What's New in Principle Mirror

5.6

June 4, 2025

Bug fixes

User reviews

iOS 18 doesn't working...

The app doesn't work on iOS 18. The mirror just doesn't see the opened file even though the iPhone is connected to Mac.

HOW TO PLUG IN A DEVICE?!

didn't get how to plug in a device, found no info about this neither in the app, nor on the official website, great ux/ui, bravo 👏🥲

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

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.
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Doesn’t work

Probably worked in the past. Only freezes and crashes now. Fix your app

Developer apps

FAQ

What does Principle Mirror do?

Principle Mirror is a companion application designed to work with Principle for Mac. It allows you to open Principle design files directly on your device or mirror the design process from your Mac in real-time.

How can I use Principle Mirror with Principle for Mac?

You can use Principle Mirror to open Principle files that you've saved or shared. Additionally, when your Mac is plugged in, the app can mirror the interactive interface designs you are creating in Principle for Mac directly onto your device.

Is Principle Mirror a free app?

Yes, Principle Mirror is available for free. There are no in-app purchases or advertisements mentioned, indicating it is a complimentary tool for users of Principle for Mac.

What are the main benefits of using Principle Mirror?

The primary benefit is the ability to view and interact with your Principle designs on a mobile device, either by opening files or by mirroring your Mac's screen. This is invaluable for testing and showcasing interactive UI designs.