#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

4.1 out of 5
1.8K Ratings
1.8K Ratings

Works great with Lenovo Laptop & iPad Air 2


Bought instead of a second monitor and really glad I did. I always take my iPad Air 2 to work so it made sense to try duet for £15 before spending £200+ on a new USB powered screen. iPad with Duet works great and I won't need to buy that other screen. Simple exe to download and install on my laptop (which work IT dept. approved) and then download the app on the iPad. Connected one to the other with the cable and all worked as expected with full ability to set resolution and move screen from the default right monitor to the left.

Installed programs on the laptop such as the ms office suite work great - no noticeable lag. Slight lag when using google cloud based apps such as docs, spread and drive - although still fine to use and I guess this would be the same on a USB powered screen anyhow.

Highly recommend Duet. Cheers.

Like the idea. Hate the app


The app sounds like an amazing idea and I decided I had to try it out. However, when I downloaded the app on my Mac and restarted it, it completely bricked my entire laptop and I was forced to reinstall macOS which took ages. The picture quality is not good from my experience and when I am using it, even in the lowest resolution, it cripples my 2017 MacBook Pro to a stage where it is almost unusable. And causes the screen to glitch out at some points. When I restart it, for some reason the app applies the reduce transparency feature which drives me instance and I have to go into system preferences to turn it off which is the most irritating thing in my life. If this app was free or cost less than it does, I could be much more forgiving. But the fact that this app is £15 makes almost causes me to loose sleep. I tried it on my Toshiba laptop and that didn’t work at all. Don’t waste your money and avoid it as there is a chance you could end up like me and have a bricked MacBook that won’t boot up and a very upset wallet.

Buggy and bad


This app for the original price, should have worked seamlessly and had tones of great features. However as a windows user time and time again I was met with driver problems, glitches, sync issues, resolution issues... the list goes on - Not to mention the fact the app caused many problems with application and devices it had nothing to do with. When it did work I loved the idea, and features like the touch screen implementation really shows the potential of this product to me. But the high price tag, bad testing and further more the cheek of a PREMIUM version, just leaves me with a bitter taste and as a very unhappy user. If the team behind this could put more time into testing or even just drop the whole premium monthly stuff to give me more stuff to enjoy and warrant the effort I have to make to try and get the app to work that would be great and I would not hesitate to change my review and start singing a different tune.


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.
In-App Purchases
  1. Duet Pro £22.99
  2. Duet Pro £3.49
  3. Duet Air (Annual) £17.49


  • Family Sharing

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

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