How to Use Your iPad as a Second Screen for Your Mac

Duet Display is an app made by way of former Apple engineers that permits you to use your iPad as a 2nd display for your Mac. In this newsletter, we’re going to give an explanation for the way it works and the stairs you wish to have to practice to get issues up and operating.


Duet Display is a good way to prolong your Mac’s desktop and will are available in particularly to hand when you are operating clear of house and wish to develop your productiveness area, however do not have the posh of a devoted exterior track.

In previous variations of macOS, the app was once hampered by way of adjustments to Apple’s working device that brought about its builders no finish of issues, however the most recent Duet replace (v2.0.3.8+) launched on December 5 seems to have resolved the ones problems thank you to the advent of complete acceleration make stronger.

We are excited to announce a step forward.

As of macOS 10.14.2+ & duet v2.0.3.8+, Duet Display is now totally sped up, making the quickest means to flip your iPad into a 2nd show even quicker. 100% loose replace at https://t.co/VxaXUTgXdb percent.twitter.com/FbbuqAGF1E

— Duet Display (@duetdisplay) December 5, 2018



Duet Display is in fact one of two apps very best identified for letting customers leverage their iPad as a 2nd display for their Mac. The different is Luna Display ($79.99), however that app makes use of some other implementation that calls for two small dongles to be certain that a constant low-latency connection.

Duet Display however is a natural instrument answer and a lot extra inexpensive at $9.99, which is why we have now selected to quilt it right here.

How to Use Your iPad as a Second Screen for Your Mac

  1. Launch the App Store to your iPhone or iPad and obtain Duet Display ($9.99).

  2. Open a browser to your Mac, navigate to www.duetdisplay.com and click on the Download Mac button on the best of the webpage to obtain the loose Mac shopper.
  3. Once the Duet shopper app is downloaded to your Mac, drag it from the Downloads folder to the Applications folder.

  4. Double-click the Duet Mac shopper to release it.
  5. Connect your iPhone or iPad to a loose USB-A port to your Mac the usage of a Lightning cable. (If you are the usage of a Mac that has the more moderen USB-C ports, you can want to use a Lightning to USB-C cable, which Apple sells in 1-meter and 2-meter lengths.)

  6. Launch the Duet app to your iPhone or iPad and wait a second whilst it communicates with the Duet Mac shopper. You must see your Mac’s desktop reflected or prolonged to your iPad display as soon as a a hit connection is made.

Once you have got issues operating, it is price trying out Duet’s show choices: click on the Duet applet for your Mac’s menu bar and you probably have an iPad hooked up you can see a button to permit a touch-sensitive MacE book Pro-style Touch Bar alongside the ground of your iPad’s display.


If you click on Advanced Settings, you’ll make a choice from a collection of Display choices to scale the output to your iOS tool. The pre-defined resolutions permit you to see both better textual content or extra desktop area, and Duet helpfully recommends which scale to select in response to tool style.


Check the field subsequent to Mirror Display if you need to replica your Mac’s desktop to your iPad fairly than prolong it. There also are choices to permit Retina show mode, building up the framerate from 30 to 60fps, and turn the picture high quality from Regular to High, all of which require extra tool power.

If you click on the cog wheel within the Duet menu bar applet, you can additionally in finding some further settings price attending to. If your Mac has a devoted graphics card then you’ll set Duet to use it solely for quicker efficiency, then again you’ll prohibit it to the built-in graphics for power potency.

There also are menus to permit or scale back transparency to your iOS tool show, an possibility to get started Duet at login, and a hyperlink to trade the Display Arrangement of your monitors in System Preferences.

iPad appearing as exterior show in System Preferences


If you get on with Duet Display, there are Air ($19.99 yearly) and Pro ($24.99) variations that provide further options like wi-fi connectivity and Apple Pencil make stronger, respectively. For additional information and make stronger, take a look at the Duet Display web page.

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