Duet Display 4+

Be Twice As Productive

Duet, Inc.

    • 4.4 • 855 Ratings
    • Free
    • Offers In-App Purchases


#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 http://www.duetdisplay.com
Terms: https://www.duetdisplay.com/help-center/duet-terms-and-conditions
Privacy Policy: https://www.duetdisplay.com/help-center/duet-privacy-policy

What’s New

Version 2.25

* Performance enhancements
* Keyboard enhancements
* Bug fixes

Ratings and Reviews

4.4 out of 5
855 Ratings

855 Ratings

Szwagier ,

Works great, but be aware...

Picture is sharp and smooth and the team behind this great app is very supportive in case of any issue, but keep in mind it’s not a substitute for an external monitor - when working on static screen (editing doc, etc.) Duet uses around 20% of your CPU. But when watching a video or working in just a bit more vivid UI environment (eg. Ableton Live), the CPU usage goes above 80% by Duet itself! So forget about watching a video without the huge noise of your computer's fans in the background.

Łukasz Markiewicz ,

Avoid this like the plague

Worst experience I ever had with any app from the App Store.

For this to work, you need to have it on your iPad and you Mac or Windows PC. Worked fine on Mac, but recently I use my PC more often so I installed the latest version and couldn’t log into Windows afterwards. Hard crash, blue screen, 100% of the time. Apparently this is a frequent enough problem that when I searched for the blue screen error Duet Display was near the top of the list of possible culprits.

Uninstalling it was a massive pain, though it is more an issue with Windows 10. Still, couldn’t remove it in safe mode without modifying the registry which is always a fun way to spend an hour of your Saturday evening.

Once it was purged, my PC returned to working flawlessly.

Worst piece of software I have ever used. I remember running into a computer virus on my parents’ PC back in XP days and it was a more pleasant experience than using this pile of junk.

This stuff can sometimes happen even to the best software devs when the system update bricks your app. But when you google and get results with people having the same problem in 2017, 2018 and 2019 then the people responsible for the Windows version should really consider a career change. Problems can happen, but persistent problems are unforgivable.

Avoid, avoid, avoid.

I wish I could have my money back.

Developer Response ,

Please contact our support and we'll provide a solution for you. We need your setup's information in order to completely fix it, the work on our display driver is continuous.

Marek Wydmuch ,

Misleading advertising

Besides, that app works quite laggy with Macbook Pro 2015 and iPad Pro, I feel cheated by the developers, I wanted a simple app that will help me while giving online lectures by allowing me to use Apple Pencil and Gestures. Unfortunately, these functions are blocked behind another payment options that pop up just after you lunching the application. If you search for "duet display apple pencil support," you will find a duet pro web page that is almost identical to the standard duet webpage. On both pages, there is no information about the subscription model and the differences between them. It's sad because I'm almost sure that developers intentionally make it that way to confuse their customers, a very unfair practice. I will definitely report this and try to refound this purchase.

Developer Response ,

Sorry for the confusion this might have caused to you. The payment for the subscription is due to the wide range of opportunities that Duet Pro can give our users.

This requires a lot of development to support, and it is only for a small number of users, so the only model that works for us is an ongoing subscription. That is why the main product is a one time purchase, and the niche features like Air & Pro are for a small market but more work.

App Privacy

The developer, Duet, Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Contact Info
  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary based on, for example, the features you use or your age. Learn More

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