Second-screen app Duet Display received a significant update today, introducing a new resolution option to support Apple's 12.9-inch iPad Pro and bringing significant performance improvements for both iPads and Macs that run the accompanying software.

For those unfamiliar with Duet Display, it's an app that is designed to turn the iPad or iPhone into a secondary display for a Mac. Duet Display was the first app to use a Lightning cable to allow an iPad or iPhone to interface with a Mac, thereby drastically cutting down on the lag that's typically present when an iOS device is used as a secondary display for a Mac over Wi-Fi.


Since its late 2014 launch, Duet Display has been updated several times to improve performance on a wide range of iPads and iPhones, but according to Duet Display developer Rahul Dewan, today's update brings "massive performance improvements." Improving performance was necessary to allow a Mac or PC to drive the high-resolution display of the iPad Pro while maintaining a lag-free connection, but the improvements also apply to all older iPads.

With the latest version of Duet Display, CPU usage has been reduced by over 80 percent on iPad and Mac or PC, thanks to a new algorithm that's more efficient and an intelligent refresh feature that's similar to the iPad Pro's own faster refresh technology, but on the software end. Extremely high CPU usage was one of our major complaints with Duet Display when it was first released and it's been a customer concern for some time, so this update should go a long way towards fixing one of the major pain points in the app.

Duet Display has proven to be a popular app with iPad owners as it gives the iPad the versatility to be used as a second display for a Mac. iPad Pro owners may find Duet Display to be especially useful given the large screen real estate of the device.

Duet Display can be downloaded from the App Store for $9.99 (reg. $15.99). [Direct Link]

Top Rated Comments

djeeyore25 Avatar
129 months ago
I wish I could use my Apple Watch as a second display.
Score: 7 Votes (Like | Disagree)
keysofanxiety Avatar
129 months ago
I wish I could use my Apple Watch as a second display.
Lawrence of Arabia never looked better!
Score: 3 Votes (Like | Disagree)
MyopicPaideia Avatar
129 months ago
Now just give us that 2nd external screen!! Two old iPads that are begging to be used simultaneously as external monitors for my Retina Macbook!!!
Score: 1 Votes (Like | Disagree)

Popular Stories

2024 iPhone Boxes Feature

Apple Adjusts Trade-In Values for iPhones, iPads, Macs, and More

Thursday November 6, 2025 11:12 am PST by
Apple today updated its trade-in values for select iPhone, iPad, Mac, and Apple Watch models. Trade-ins can be completed on Apple's website, or at an Apple Store. The charts below provide an overview of Apple's current and previous trade-in values in the U.S., according to its website. Maximum values for most devices either decreased or saw no change, but the iPad Air received a slight bump. ...
Finder Siri Feature

Apple's New Siri Will Be Powered By Google Gemini

Wednesday November 5, 2025 11:57 am PST by
The smarter, more capable version of Siri that Apple is developing will be powered by Google Gemini, reports Bloomberg. Apple will pay Google approximately $1 billion per year for a 1.2 trillion parameter artificial intelligence model that was developed by Google. For context, parameters are a measure of how a model understands and responds to queries. More parameters generally means more...
Liquid Glass General Feature

Apple Shares Liquid Glass Design Gallery

Thursday November 6, 2025 2:45 pm PST by
Apple is promoting the new Liquid Glass design in iOS 26, showing off the ways that third-party developers are embracing the aesthetic in their apps. On its developer website, Apple is featuring a visual gallery that demonstrates how "teams of all sizes" are creating Liquid Glass experiences. The gallery features examples of Liquid Glass in apps for iPhone, iPad, Apple Watch, and Mac. Apple...
iOS 26

iOS 26.1 Available Now With These 8 New Features

Monday November 3, 2025 5:54 am PST by
Following more than a month of beta testing, Apple released iOS 26.1 on Monday, November 3. The update includes a handful of new features and changes, including the ability to adjust the look of Liquid Glass and more. Below, we outline iOS 26.1's key new features. Liquid Glass Toggle iOS 26.1 lets you choose your preferred look for Liquid Glass. In the Settings app, under Display...
airtag purple

Apple's Website Lists AirTag 4-Pack at Shockingly Low Price [Updated]

Friday November 7, 2025 6:40 am PST by
Apple's online store in the U.S. is suddenly offering a pack of four AirTags for just $29, which is the same price as a single AirTag. This is likely a pricing error, and it is unclear if orders will be fulfilled. Apple has not discounted the AirTag four-pack in any other countries that we checked. Delivery estimates are already pushing into late November to early December, suggesting...
apple watch se 3 always on

Apple to Remove iPhone-Apple Watch Wi-Fi Sync in EU With iOS 26.2

Thursday November 6, 2025 4:37 am PST by
Apple in iOS 26.2 will disable automatic Wi-Fi network syncing between iPhone and Apple Watch in the European Union to comply with the bloc's regulations, suggests a new report. Normally, when an iPhone connects to a new Wi-Fi network, it automatically shares the network credentials with the paired Apple Watch. This allows the watch to connect to the same network independently – for...
ikea smart home devices

IKEA Debuts 21 HomeKit-Compatible Smart Bulbs, Sensors, and Controls

Thursday November 6, 2025 4:08 pm PST by
IKEA today announced the upcoming launch of 21 new Matter-compatible smart home products that will be able to interface with HomeKit and the Apple Home app. There are sensors, lights, and control options, all of which will be reasonably priced. Some of the products are new, while some are updates to existing lines that IKEA previously offered. There are a series of new smart bulbs that are...
Home Hub Command Center with Dome Base Feature

Apple's 2026 Smart Home Revamp: All the Rumors

Wednesday November 5, 2025 3:54 pm PST by
It's been over a decade since Apple's HomeKit smart home platform launched, and it is overdue for an update. HomeKit and the Home app can no longer keep up with AI-powered solutions from other companies like Google and Amazon, but that's set to change with a smart home revamp that Apple has planned for 2026. Home Hub Apple is working on a home hub or "command center" that will serve as a...