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
120 months ago
I wish I could use my Apple Watch as a second display.
Score: 7 Votes (Like | Disagree)
keysofanxiety Avatar
120 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
120 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

Apple iPhone 16e Feature

Apple Announces iPhone 16e With A18 Chip and Apple Intelligence, Pricing Starts at $599

Wednesday February 19, 2025 8:02 am PST by
Apple today introduced the iPhone 16e, its newest entry-level smartphone. The device succeeds the third-generation iPhone SE, which has now been discontinued. The iPhone 16e features a larger 6.1-inch OLED display, up from a 4.7-inch LCD on the iPhone SE. The display has a notch for Face ID, and this means that Apple no longer sells any iPhones with a Touch ID fingerprint button, marking the ...
iphone 17 pro asherdipps

iPhone 17 Pro Models Rumored to Feature Aluminum Frame Instead of Titanium Frame

Tuesday February 18, 2025 12:02 pm PST by
Over the years, Apple has switched from an aluminum frame to a stainless steel frame to a titanium frame for its highest-end iPhones. And now, it has been rumored that Apple will go back to using aluminum for three out of four iPhone 17 models. In an investor note with research firm GF Securities, obtained by MacRumors this week, Apple supply chain analyst Jeff Pu said the iPhone 17, iPhone...
apple launch feb 2025 alt

Here Are the New Apple Products We're Still Expecting This Spring

Thursday February 20, 2025 5:06 am PST by
Now that Apple has announced its new more affordable iPhone 16e, our thoughts turn to what else we are expecting from the company this spring. There are three product categories that we are definitely expecting to get upgraded before spring has ended. Keep reading to learn what they are. If we're lucky, Apple might make a surprise announcement about a completely new product category. M4...
Generic iOS 18

Here's When Apple Will Release iOS 18.4

Wednesday February 19, 2025 11:38 am PST by
Following the launch of the iPhone 16e, Apple updated its iOS 18, iPadOS 18, and macOS Sequoia pages to give a narrower timeline on when the next updates are set to launch. All three pages now state that new Apple Intelligence features and languages will launch in early April, an update from the more broader April timeframe that Apple provided before. The next major point updates will be iOS ...
prioritize notifications ios 18 4

Everything New in iOS 18.4 Beta 1

Friday February 21, 2025 1:08 pm PST by
Apple finally released the first beta of iOS 18.4 to developers for testing purposes, and while the beta is lacking some of the Apple Intelligence features we were hoping for, there are some notable new additions. Subscribe to the MacRumors YouTube channel for more videos. Priority Notifications - Apple Intelligence There is a new Priority Notifications feature that can show you your most...
apple launch feb 2025

Tim Cook Teases an 'Apple Launch' Next Wednesday

Thursday February 13, 2025 8:07 am PST by
In a social media post today, Apple CEO Tim Cook teased an upcoming "launch" of some kind scheduled for Wednesday, February 19. "Get ready to meet the newest member of the family," he said, with an #AppleLaunch hashtag. The post includes a short video with an animated Apple logo inside a circle. Cook did not provide an exact time for the launch, or share any other specific details, so...
iPhone 16e Feature

Apple Denies Speculation Surrounding iPhone 16e's Lack of MagSafe

Friday February 21, 2025 8:01 am PST by
Apple has confirmed that its custom-designed C1 modem in the iPhone 16e has nothing to do with the device's lack of MagSafe support, according to Macworld. Following the launch of the iPhone 16e, there was some speculation online about how MagSafe magnets might have interfered with the C1 modem's cellular connectivity performance, and this was considered to be a potential reason for the...
ios 18 4 ambient music

iOS 18.4 Adds New Ambient Music Feature

Friday February 21, 2025 11:06 am PST by
In iOS 18.4, there's a new Ambient Music option that can be added to Control Center. There are four different sound categories, including Sleep, Chill, Productivity, and Wellbeing. Each category can be added to Control Center separately, and tapping one plays a random selection of sounds or music from that particular category. You can't choose what's playing from Control Center, but if...