Product Review of “Duet Display”

Updated 8/31/18


Product Review – I have read about Duet Display and other software solutions that turn an iPad/iPhone into a second display for your MacBook. I finally made the decision and bought and installed Duet Display this past January. I haven’t regretted it in the least.

Now I don’t generally use this second screen solution at home as I am working mostly on my dual screen Mac Mini there. This is, for me, a travel productivity aid, giving me a second screen for my MacBook. Having that additional screen space has been very useful as I work on articles for my Blog.

I attach my iPad and start Duet Display on it and my MacBook, then set my iPad to the left side of my MacBook propped up with my ANKER Multi-Angle Stand. I can then drag windows from the MacBook main screen over to my iPad for reference while I am writing on the main screen.

I certainly like Duet Display and this product has been well received by users as it has over 2700 reviews in the App Store and a 4.4/5 rating. The iOS part of the App is currently $9.99 in the iTunes App Store. I now consider this a part of my required MacOS Toolkit for any MacBook I may have.



  • Free software for the Mac/PC
  • Low cost (~$10) software for the iPad/iPhone
  • Works with Mac and Windows
  • Little to no lag time
  • Add Touch Bar access to Apps running in the iPad window
  • iPad is powered by Mac while in use as a second display



  • Sadly, Apple has broken Duet Display as of macOS 10.13.4 and beyond
  • Requires a Lightning cable connection between MacBook and iPad


See my other Mac and iOS articles


One thought on “Product Review of “Duet Display””

  1. I own a MacBook Version 10.14.1 and connected to iPhone XS usb c to lightning cable. Software (Version find direct on Duet website) is required, paid version $10.00, for the MacBook and free app download on iPhone. At first, the app would ONLY allow mirroring NOT extend; glitchy and disappointed. Sent an email to Duet Customer Service and received a response the very next day, with ongoing support, step by step assistance. Works wonders, exactly as advertised! I needed to change system preferences, Firewall options and allow program access. Hoping this does not compromise any security, time will tell. Worth the investment and considering an iPad Pro to use as second monitor, etc. Following through with my promise to the CSR; I would leave a review. Definitely worth the $10 for me.. šŸ™‚

    Liked by 1 person

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