#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
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What’s New

Version 2.2.4

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: v2.1.1.2

Ratings and Reviews

4.2 out of 5
3.7K Ratings

3.7K Ratings

Grimput ,


This is such a great app for maximising what an I pad can be I use it with my mid range Hp laptop and it works fine my iPad isn’t even the latest thing it’s an air 2 showing you don’t need a pro or something that costs the earth to get it to work. I wasn’t 100% certain on how to set it up at first as I’m not the most tech savvy person however I sent an email to the team and heard back in about 20 mins they spent time going through the possible issues until I knew what to do the set up was simple and they guided me through it, most people probably wouldn’t need this assistance but it was some of the best for speed and efficiency. The app works great and helps me cut the time it takes to do things drastically it is legitimately worth it and if there are any issues I find it hard to believe contacting the help team wouldn’t sort it as they are so efficient. I never had twin displays before so never knew the benefit now I not only have one but an ultra portable one that I use on a daily basis. Genuinely one of the best apps for productivity out there and I can’t recommend enough especially for editing things like photo and video if you need to constantly switch between windows and programs such as Vegas pro ,paint ,after effects or just the file explorer . Being able to drag and drop from the file explorer directly to Vegas without having to minimise or alter anything is amazing and time saving.

Cwenham ,

Works as advertised, could use more work to iron-out annoyances

On the first try it took some jiggling of cables before it worked, but it has been working as advertised since then. The recommendation to unplug-n-replug the Lightning cable connecting it to the other computer usually works. After that, launching Duet on the iPad is enough to make the PC driver wake up and connect by itself.

I used a Native Union cable, but it connected to a Dell XPS with a cheap Type-A-to-Type-C USB adaptor. Watch for jiggle.

Duet could focus on making the persistency of the connection more durable, I’d like to see these:

Give the connected PC more patience to wait-out broken connections before giving up and moving all the windows back, or give me an optional mode to wait indefinitely until I type a key combination. Put a small watermark on the host screen so I know it’s active and remind me how to get out of that mode.

Restore windows to where they were once the iOS device is reconnected, especially the little palettes and toolboxes that you connected the second screen for in the first place.

Make it easier to tell the connected PC where the second screen is in relation. Support the iPad’s keyboard so I can type a shortcut to say “I moved it to the left side” when I have to rearrange stuff on the table.

adampittstanley ,

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.


Duet, Inc.
55.5 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
In-App Purchases
  1. Duet Pro (Annual) £28.49
  2. Duet Pro £3.49
  3. Duet Air (Monthly) £1.79


  • Family Sharing

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

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