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#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 2.3.0

Improved iPhone support
Desktop to Desktop supported with your subscription
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: v2.3.1.6+

Ratings and Reviews

4.4 out of 5
211 Ratings

211 Ratings

Mc99658 ,

Finally connected to Windows 10 x64

Uninstalled and re installed application in windows 10x64. Reinstalled the driver as described in tutorial. Froze On Launching Duet... I did everything again and finally succeeded! On Windows 7 32bit the installation was easy with zero problems.
The program itself is excellent, does everything it promises. For all these 4 stars

Posanickyparxounhdh;; ,

Amazed to see that it works as promised!

I was reluctant to buy this app, believing it would probably not be as fast as promised on the website. My initial impression (with an iPad Pro 2018 and a Win7 PC) was not that great, response-wise, and I also had a nagging “OSBASE iDisplay Evaluation Copy” message, floating on the screen.
I asked the devs via email and I was guided to download an earlier version of the PC client (v1.5.6.7 for anyone having the same issue), which was the last made-for-Win7 version. After installing this version, the message went away and at the same time, the performance improved greatly! It’s now as if I have a 2nd monitor plugged in at my graphics card (it is indeed THAT fast). Great work, Duet guys!

_AzNfiRe_ ,

20€ for a year and 10€ to just download it

I never, ever, requested any refund from any App Store, but this is first time I will. The app requires 10€ to download it so that it offers a blurry 30-60 FPS laggy screen in any resolution you choose or quality, which half are locked due to the pro upgrade. Also if you want to use it remotely/wirelessly and/or with your apple pen for your design work, you have to upgrade to pro for 20€ per year. And yes, my workstation is the main rendering machine for a huge Advertising Group of Companies in my country. It can handle just a usb3 streaming... Shame...

Developer Response ,

We are very sorry that this was your initial experience with Duet. Although, these are common issues that are caused due to outdated drivers or a not-so-ideal setting arrangement. Our support team can further explain and assist - Please email us at and refer to this review!

App Privacy

The developer, Duet, Inc., has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

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

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