#1 best-selling iPad app in US, Japan, UK, Germany, and 17 other countries!

Duet turns your iPad or iPhone into the most advanced extra display for your Mac & PC. Developed by a team of ex-Apple engineers, Duet offers unparalleled performance and display quality - all with zero lag.

Be twice as productive by multitasking with two screens. And for those that travel, have a portable way to stay productive.

To get started, plug your iPad into your desktop using your charging cable. The free Duet desktop app will automatically detect your device, and transform it into a high performance touchscreen display.

There’s no need to worry about unreliable Wi-Fi, laggy performance, pixelated screens or managing network passwords.

Interact with Mac & PC like never before, with touch & gestures, including two-finger scrolling, pan and zoom.

And with our latest release, you can even add a touch bar to any iPad with any Mac.

With Duet Pro, you can turn your iPad and Apple Pencil into a professional graphics tablet. We’ve re-engineered our rendering algorithms for ultra-responsive drawing, optimized specifically for designers, illustrators and artists.

Duet Pro also unlocks pressure & tilt sensitivity, hover, palm rejection, and more to seamlessly draw in the most powerful programs for professionals. Get precise control in Photoshop, Corel Painter, Lightroom, ToonBoom, Illustrator, Manga Studio and more. 

TechCrunch - "Feels Like Magic"
TIME - "Getting Work Done Faster and More Efficiently"
The Guardian - "Lag-free"
Forbes - "The simple thing to note is this...Duet Display works."
The Verge - "Glorious Fluidity"
Lifehacker - "It's fast, easy to use, and works great"
Business Insider - "Zero lag and true retina resolution”
Wall Street Journal - “It’s as easy as just plugging it in"

“Awesome! My iPad Pro can be an extra monitor! Cool app”
~CEO of T-Mobile, John Legere

“Very smooth and responsive indeed, plus you could use the touch screen to “click” on screen interfaces!”
~Photographer, Lok Cheung

“Love the ability to use my iPad as a monitor with Duet.”
~Former Chief Evangelist of Apple, Guy Kawasaki

“Just started using this app called Duet… Kinda love it so far.”
~Comedian and Youtube, Phillip DeFranco

“All my mac folks look at the Duet app… GREAT!”
~Actor and Comedian, Sinbad 

"I really like the app, I suppose the biggest compliment I can give is that it's so easy to setup it almost seems like an Apple product.”
~Early Adopter, M. Nightingale

"Amazing solution for me by the way. Works as I was hoping for and actually my main reason for getting an iPad : )”
~Early Adopter, M. Gemzoe

Duet Works With:
All iPhones and iPads with iOS 7.0 and later
All Macs with 10.9 (Mavericks) and later
All PCs with Windows 7 and later

Duet Pro Works With:
All iPad Pros with Apple Pencil
All Macs with 10.9 (Mavericks) and later
All PCs with Windows 8.1 and later (64 bit)
Available for $20 per year

Duet Pro is an optional upgrade for additional features, and price may vary by location. Duet Pro subscriptions will be charged to your credit card through your iTunes account. Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. You will not be able to cancel the subscription once activated. Manage Duet Pro in Account Settings after the optional upgrade.

Learn more at
Privacy Policy -

What's New

Version 2.0.0

Feature improvements
Please download the latest desktop apps from our website for the best experience
Mac v1.7.1.7 -
Windows v1.5.2.1 -

Ratings and Reviews

4.1 out of 5

106 Ratings

106 Ratings

Great App for Productivity Supported by a Hardworking Team


Duet display has been excellent for me as a student and small business owner so far. It allows a seamless transition from working at home on my windows based computer with 3 monitors to my portable setup with my MacBook Pro/IPad and allows me to have more screen realestate without compromising battery life or having a large system to carry around with me.
I recently had an issue with my duet display not functioning and caused me great frustration. However the duet display team contacted back very quickly (truely sticking to their aim of responding within 12 hours) and helping me through the process of repairing/updating the software which had been affected by the new Apple MacOS update.
I don’t write reviews often, but when i do, it is for something i truely believe is doing a great job.
Thank you to Hector who helped me with my predicament and keep up the hard work with making a great app.

If you have any issues, contact their support team. You wont regret it.

Not very happy


I bought this app thought it would be like my son’s desktop which has two monitors. He used it for gaming however when I used his desktop for my paper work I found two monitors were so convenient. So I thought this app would make my iPad a second monitor for my MacBook. I was disappointed. It was different with my sons duo monitor computer. Firstly when I moved a word file from MacBook to iPad, it became either too small or too big. Secondly the touch screen on my iPad didn’t work properly to enlarge or make it smaller. It always frozen. I had to use mouse to work on iPad. I just gave up 15 bucks down the toilet.

Asking for a refund


I just rated 1 star as, while it does what it says it does, it also broke using my Apple Watch to unlock my Mac (and turning it off and back on has failed as I can't check the box again after I checking it).

Also, despite having the Messages notification setting “Show message preview” unchecked it has started showing previews on the iPad screen. I use my Mac in a work environment and I cannot have personal messages popping into the corner of my display.

I could reach out to the developer and ask for help, but I shouldn’t have to, and in any case I haven't got time to try to troubleshoot why it's broken stuff, nor figure out what else it broke - it’s a productivity tool after all.

Let’s hope it hasn't done too much damage and doesn't take too long to fix it once I’ve uninstalled it.

Steer clear is my recommendation.


Duet, Inc.
52.7 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad and iPod touch.
English, Danish, Dutch, Finnish, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Traditional Chinese
Age Rating
Rated 4+
© Duet, Inc.
In-App Purchases
  1. Duet Pro $42.99
  2. Pro - Drawing Tablet Upgrade $29.99
  3. Duet Pro $6.49


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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