Apple Introduces Sidecar App for Using an iPad as a Mac's Secondary Display

Apple today at WWDC 2019 unveiled a new Mac app named Sidecar that will allow an iPad to be used as a second display for a Mac, similar to existing third-party options like Duet Display and Luna Display.

mac sidecar 1
‌Sidecar‌ will work both wired and wirelessly and will support the Apple Pencil as an input device for the Mac. This functionality will be supported across all apps that support tablets.

mac sidecar 2
Apple's WWDC 2019 keynote is underway. Stay tuned for updates…

Related Roundup: iPad Pro
Buyer's Guide: iPad Pro (Buy Now)

Popular Stories

iOS 26

iOS 26.4 and iOS 27 Features Revealed in New Leak

Friday December 12, 2025 10:56 am PST by
Macworld's Filipe Espósito today revealed a handful of features that Apple is allegedly planning for iOS 26.4, iOS 27, and even iOS 28. The report said the features are referenced within the code for a leaked internal build of iOS 26 that is not meant to be seen by the public. However, it appears that Espósito and/or his sources managed to gain access to it, providing us with a sneak peek...
Apple Logo Top Half

Early iOS 26 Software Leak Uncovers Dozens of Upcoming Apple Features

Monday December 15, 2025 3:05 pm PST by
Software from an iPhone prototype running an early build of iOS 26 leaked last week, giving us a glimpse at future Apple devices and iOS features. We recapped device codenames in our prior article, and now we have a list of some of the most notable feature flags that were found in the software code. In some cases, it's obvious what the feature flags are referring to, while some are more...
apple beta 26 lineup

Apple Leak Confirms Work on Foldable iPhone, AirTag 2, and Dozens More Devices

Monday December 15, 2025 2:05 pm PST by
Last week, details about unreleased Apple devices and future iOS features were shared by Macworld. This week, we learned where the information came from, plus we have more findings from the leak. As it turns out, an Apple prototype device running an early build of iOS 26 was sold, and the person who bought it shared the software. The OS has a version number of 23A5234w, and the first...
Apple Foldable Thumb

Leak Reveals Foldable iPhone Details

Monday December 15, 2025 9:09 am PST by
The first foldable iPhone will feature a series of design and hardware firsts for Apple, according to details shared by the Weibo leaker known as Digital Chat Station. According to a new post, via machine translation, Apple is developing what the leaker describes as a "wide foldable" device, a term used to refer to a horizontally oriented, book-style foldable with a large internal display....
iOS 26

iOS 26.3 Beta 1 Features: What's New So Far

Monday December 15, 2025 4:23 pm PST by
Apple is testing iOS 26.3, the next version of iOS 26 that will launch around January. Since iOS 26.3's testing is happening over the holidays, it is a smaller update with fewer features than we've seen in prior betas. We've rounded up what's new so far, and we'll add to our list with subsequent betas if we come across any other features. Transfer to Android Apple is making it simpler...
iOS 26

Apple Releases iOS 26.2 With Alarms for Reminders, Lock Screen Changes, Enhanced Safety Alerts and More

Friday December 12, 2025 10:10 am PST by
Apple today released iOS 26.2, the second major update to the iOS 26 operating system that came out in September, iOS 26.2 comes a little over a month after iOS 26.1 launched. ‌iOS 26‌.2 is compatible with the ‌iPhone‌ 11 series and later, as well as the second-generation ‌iPhone‌ SE. The new software can be downloaded on eligible iPhones over-the-air by going to Settings >...
iOS 26

iOS 26.2 Coming Soon With These 8 New Features on Your iPhone

Thursday December 11, 2025 8:49 am PST by
Apple seeded the second iOS 26.2 Release Candidate to developers earlier this week, meaning the update will be released to the general public very soon. Apple confirmed iOS 26.2 would be released in December, but it did not provide a specific date. We expect the update to be released by early next week. iOS 26.2 includes a handful of new features and changes on the iPhone, such as a new...
airpods max 2024 colors

AirPods Max 2 Likely to Offer These 10 New Features

Monday December 15, 2025 7:41 am PST by
Apple released the AirPods Max on December 15, 2020, meaning the over-ear headphones launched five years ago today. While the AirPods Max were updated with a USB-C port and new color options last year, followed by support for lossless audio and ultra-low latency audio this year, the headphones lack some of the features that have been introduced for newer generations of the regular AirPods and the ...

Top Rated Comments

g3nw1 Avatar
85 months ago
I love using Luna, but they had to hack the hardware to make it work, having it built in directly to MacOS/iOS is obviously going to be better. Hopefully, the folks at AstroPad/Luna can provide some additional features, would hate to see them go out of business.
I for one hope this is the death of AstroPad as a company! They milked original customers that supported them from the start! by being greedy and moving Pro users to subscription model.Something that should have been offered for free to original users who bought into their eco system and purchased pens that they endorsed then they dropped support for!

Karma is a great thing sometimes.
Score: 6 Votes (Like | Disagree)
szw-mapple fan Avatar
85 months ago
Well, rest in peace Duet and Luna Display
Score: 5 Votes (Like | Disagree)
satinsilverem2 Avatar
85 months ago
I’m curious what the supported Macs/iPads are too.
from what I've read on the features list any A9 or higher iPad and any 2012 or later Mac can support this. I was worried that my 9.7 iPP was going to miss out but as far as I can tell so far its going to be supported
Score: 4 Votes (Like | Disagree)
blcamp Avatar
85 months ago
Well, rest in peace Duet and Luna Display
That depends on Apple's implementation. The Apple pencil doesn't have a hover feature, and many Photoshop functions, such as the clone stamp, depend on hover. AstroPad has a special workaround that allows you to use touch to simulate hover. We shall see if Apple is going to have that implemented. AstroPad has some pretty advanced features that go beyond screen mirroring.
I wouldn't write off Duet. I'm a Windows 10 user and Duet works great for expanding my desktop onto the iPad. So even if it loses Mac users, there are still plenty of us Windows users who will still comprise a decent-sized market for an app such as Duet... unless Apple ports SideCar over to Windows also.
Score: 3 Votes (Like | Disagree)
dino12 Avatar
85 months ago
I hope I can use it as a main display for the Mac Mini. Would be nice to just use my iPad as a display while the TV is being used by my wife.
Score: 3 Votes (Like | Disagree)
mam8dg Avatar
85 months ago
Hope the 10.5" iPad Pro supports this
Score: 3 Votes (Like | Disagree)