#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)

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 2.0.4

Feature improvements
Please download the latest desktop apps from our website for the best experience
Mac v2.0.1.5 -
Windows v1.5.2.2 -

Ratings and Reviews

3.9 out of 5
178 Ratings
178 Ratings



Det hakker ad helvedes til, og ipaden sluger nok strømmen fra min computer💁🏿

Developer Response

Sorry for your trouble, we can help you out troubleshooting these issues. Please contact our support to!
As for the iPad taking power from your computer, this will always be the case for any device you connect to it. When any device is connected to the computer it will charge from it though at a slower pace than it would with the actual charger, when you're using the iPad as a display the battery consumption rate exceed the charge rate it receives from your PC.

Nothing works...


I had high hopes for this app. So I payed the 129kr (20usd), and boy was I disappointed...

It was easy getting going, but then I tried zbrush and photoshop, on my I7 desktop pc with 16gb ram and raid ssd. The lag was terrible, no pressure sensitivity, no menu to access to set up pen or anything like it. I couldn't even figure out if I had the pro version or not? For me, this app in its current state is usseless, and I'm gonna be looking for a refund. I also tried it with my laptop as well, just to make sure it wasn't some continuous driver issue, but it was the same, just with a bit more lag.

Rigtig god app!


Rigtig god app!
Bruger den meget, den køre fint og glidende, ville dog ønske at man kunne bruge den med to ipads!


Duet, Inc.
53 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.
89,00 kr
In-App Purchases
  1. Duet Pro 199,00 kr
  2. Duet Air (Annual) 155,00 kr
  3. Duet Pro 29,00 kr


  • Family Sharing

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

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