#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 2.2.6

New Hardware Acceleration for Mac (requires Mojave 10.14.2)
Adaptive line lead for Pro users - line lead now matches the color and shape of your stroke
Stability fixes

Latest Versions
Mac: v2.3.1.3+

Ratings and Reviews

4.2 out of 5
488 Ratings

488 Ratings

Juventino86 ,

Klockren applikation

Funkar alldeles utmärkt med min Macbook Air 13” från 2013 med 10.14 Mojave och min iPad Air 2 med iOS 12.1

Inget märkbart lagg, hög upplösning och alla mac funktionerna funkar riktigt bra! Många smarta funktioner som Touch Bar finns även fast min dator inte har en Touch Bar annars och det är riktigt skönt att ha lite extra skärmutrymme på min bärbara lilla 13 tummare

Aceton-bofinken ,

Nifty function to get better use of laptop and iPad together

Must say that the add was better that the experience, to start with. I did run into a few issues with drivers etc. (WinX) but the tech team at Duet directed me to the correct information and version.
Now this works like a charm, very useful!

LarsOhl ,

Super, almost no lag! Works like a second screen with extras

Really good! I have long been looking for a way to use my iPad as a second screen to use when working in the fields. Duet is the first solution that I have found that really works. As an extra you also get a touch interface for programs showed at the iPad.

A really nice feature is that when both iPad and Desktop is on the same WiFi and you connect the iPad to Desktop using USB Duet then automatically and seamless switches from USB to WiFi connection and back when removing or reinstalling the USB cable.

Really good when you sit at a desk working with the Desktop having the iPad just as the screen. Then you can remove the USB and take the iPad with you and still have control over your desktop from iPad

Top notch!


Duet, Inc.
55.7 MB

Requires iOS 10.0 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
119,00 kr
In-App Purchases
  1. Duet Pro (Annual) 355,00 kr
  2. Duet Pro 40,00 kr
  3. Duet Air (Monthly) 20,00 kr


  • Family Sharing

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

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