How to Use Your iPad Pro as a Secondary Display

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You can do a lot with the iPad Pro from the moment you unwrap it, but Apple doesn't include a feature to use the enormous 12.9-inch display as a secondary screen for your existing PC or Mac. Luckily, there's Duet Display ($10), an app that lets you hook up the extra-large tablet to your computer to gain screen space.


Compatible with both PCs and Macs running OS X 10.9 and above or Windows 7 and above, Duet also works with systems that already have multiple displays attached, depending on your computer's processing power. In our testing, it worked as a third monitor for a MacBook Pro, and Duet says the app will also work with iPhones and iPads running iOS 7 or later.

MORE: Apple iPad Pro: Full Review

After you install Duet, you can just drag windows off the side of your display, and they land on the iPad Pro's screen, as it functions just like any monitor you connect to your system. If you want to adjust where the iPad Pro's screen is in relation to your monitor, open System Preferences, Displays and Arrangement, and drag around the blue boxes (the one with a white bar on its top is your main screen). Here's how to get started.

1. On your Mac or PC, open and select Download Mac or Download PC, depending on what platform your computer runs. Here, we’re connecting it to a Mac.

01 28145214498619122. Open the ZIP file your computer downloads.

02 28145214498619113. Open the Duet app.

03 28145214498619124. Click Open.

04 28145214498619125. Select Start.

05 28145214498619116. Check the box next to “I Agree To The License Terms and Conditions” and select Authorize & Install.

06 28145214498619127. Enter your system password and select Add Helper.

07 28145214498619128. Select Restart Your Mac, and your system will reboot.

08 2814521449861911

9. Open your applications folder (Command + Shift + A) and open Duet.

screen shot 2015 12 11 at 2.15.42 pm

10. On your iPad Pro, open App Store and buy Duet Display for $10.

11 2814521449861913

11. Open Duet Display.

12 281452144986191112. Select Got It.

13 281452144986191113. Connect the USB end of a Lightning cable to your computer.


14. Connect the Lightning port to your iPad Pro.


Your iPad Pro is now a functional display for your PC or Mac!


Author Bio
Henry T. Casey
Henry T. Casey,
After graduating from Bard College a B.A. in Literature, Henry T. Casey worked in publishing and product development at Rizzoli and The Metropolitan Museum of Art, respectively. Henry joined Tom's Guide and LAPTOP having written for The Content Strategist, Tech Radar and Patek Philippe International Magazine. He divides his free time between going to live concerts, listening to too many podcasts, and mastering his cold brew coffee process. Content rules everything around him.
Henry T. Casey, on
Add a comment
  • Jeff M Says:

    So I guess the developer realized enough people were interested in this so they decided to double the price. Sorry you lost me as a potential customer.

  • Ryan H Says:

    I have been using my iPad pro as a portable second screen for my macbook and it works great. I especially like to to position the iPad in landscape mode to make reading documents easier (the UAG case is awesome btw). Sometimes starting duet display can take a few seconds, but when it connects there is very little lag. Is there a way to connect a second iPad pro to my laptop to have 3 screens on the go? I often work remotely and would love to maximize desktop space.

  • manlio vetri Says:

    Is there any chance to let this work on a macbook pro 2009 running OSX Snow Leopard?

  • Sepack Says:

    I travel regularly for work. I use multiple monitors at home, and find it frustrating to not have the extra monitor when I'm traveling. This is a great solution. Thinking this is only for Apple fan boys with too much money is very short sighted.

  • Todd Meyers Says:

    What about the pen features? Does it also function as an input device with apps like Photoshop?

  • A-thought Says:

    $1,000 for a second display.

    If Apple loyalists have that much cash to blow, hats off to you all.

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