Luna Display today introduced a new Mac-to-Mac mode that allows any Mac released within the last decade to be used as a second display for another Mac. This includes any combination of Macs, ranging from a MacBook Pro and an iMac to a MacBook Air being used as the primary display for a Mac mini.

To use Mac-to-Mac mode, users must purchase a Luna Display dongle that plugs in to the second Mac. USB-C and DisplayPort options are available for $69.99 each, and Luna is offering 25 percent off through Friday.

luna display mac to mac mode
The primary Mac must be running OS X El Capitan or later, while the secondary Mac requires OS X Mountain Lion or later. In addition, both Macs must be connected to the same network via Wi-Fi or Ethernet, and each require the free Luna Display app available to download on the Luna Display website.

Luna Display is pushing forward despite Apple adding Sidecar in macOS Catalina, a native solution for using an iPad as a second display for a Mac.

"With all of the hype around Sidecar, one of the biggest gripes we've heard is that it only works with a limited range of Mac models," wrote Luna Display co-founder Giovanni Donelli in an email. "That got us thinking about how we can push Luna Display to bring even more value to our Mac devices."

Apple also has a feature called Target Display Mode that allows late 2009 to mid 2014 iMacs to be used as as external display for another Mac.

Luna Display's solution includes full keyboard, trackpad, and mouse support on both Macs. The company has shared complete step-by-step instructions on how to set up Mac-to-Mac mode on its website.

Top Rated Comments

justperry Avatar
37 months ago

https://symless.com/synergy

Works across all OS's and screens without a dongle, and has been around for years.
Huh, this has nothing to do with the article, it's about a second display, not mouse/keyboard sharing between computers.
Score: 9 Votes (Like | Disagree)
palev Avatar
37 months ago

It's literally the same features.
No, it isn't. That is only mouse & keyboard sharing. Nothing about screen sharing.
Score: 8 Votes (Like | Disagree)
fhall1 Avatar
37 months ago

It's literally the same features.
Better go check some Youtube videos - Synergy is not the same thing at all.
Score: 8 Votes (Like | Disagree)
StellarVixen Avatar
37 months ago
I admire that they didn't throw in the towel when Apple announced the Sidecar (which was originally their idea).


I currently do not have use for this, but there are people who might find this useful.
Score: 7 Votes (Like | Disagree)
Kinotto Avatar
37 months ago
When Sidecar was announced I thought it’ll be the death of Astropad, but Apple’s lack of insight on what some Sidecar users will need played in favour of the little company.

Amongst the most notably lacking features there are:

-Pencil pressure sensitivity settings
-Customisable shortcuts
-Full on-screen keyboard
-Full touch support

All of those are fundamental features for a digital artist working on iPads, and them missing on Sidecar is a clear indication that Apple made this app not with artists in mind, as I was hoping ( which would have been an earthquake in the world of digital art).
Again Apple demonstrates there’s no visionary at the steering wheel, just a sad bean counter...
Score: 4 Votes (Like | Disagree)
Kinotto Avatar
37 months ago

It is just their first run at it, it is obviously a popular feature. I can see they will improve on it and eventually replaced Astropad, Duet, etc
EDIT: 4 years ago I would have agreed, but I don’t believe anymore Apple’s will is to deliver the best.
The Apple we all knew would never have released a software inferior at launch compared to alternatives developed by software houses with 1/1000 of the resources Apple have.

And the same applies to hardware: as I stated in another thread, besides the iPhones the rest of the product lineups are full of “premium” devices with stupid trade-offs and limitations, with the only logical reason behind being a will to keep customers in a neverending upgrade cycle which benefits no one but Apple itself.

You want a MacBook? Get ready for awful keyboards, graphics and thermals. Want an iPad Pro ? Sure, we give you the best, but don’t put it in your backpack or it will bend. Want a Pro desktop? Sure, but you can’t upgrade it, got to buy a whole new one.
Score: 3 Votes (Like | Disagree)

Popular Stories

airpods pro black background

AirPods Pro 2: Five New Features and Improvements to Expect

Sunday August 14, 2022 3:28 pm PDT by
Apple's second-generation AirPods Pro are finally nearing launch, with a release expected later this year. If you are considering upgrading to the new AirPods Pro once they are released, keep reading for a list of five new features to expect. In addition to all-new features, the second-generation AirPods Pro will likely adopt some features added to the standard AirPods last year. H2 Chip ...
iPhone 14 Dummies 1 Feature

Everything Rumored for Apple's September Event: iPhone 14, Apple Watch Pro and More

Friday August 12, 2022 2:34 pm PDT by
There's just about a month to go until Apple holds its annual September event focusing on new iPhone and Apple Watch models. We thought we'd take a quick look at everything that's rumored for Apple's September event to give MacRumors readers a rundown on what to expect when the first fall event rolls around. iPhone 14 The iPhone 14 can probably be described more as an "iPhone 13S" because...
10th Generation iPad Render

10th-Generation iPad With Major Design Changes Reportedly in Production Ahead of September Launch

Monday August 15, 2022 8:02 pm PDT by
Apple's rumored 10th-generation iPad is currently in production and will feature "major" design changes, according to a report from Taiwanese website DigiTimes. A mockup of the potential 10th-generation iPad design by Renders By Shailesh The report did not provide any specific details about the 10th-generation iPad's new design, but rumors suggest the device will feature a larger 10.5-inch...
ios 16 lock screen feature2

Apple Seeds Sixth Betas of iOS 16 and iPadOS 16 to Developers [Update: Public Beta Available]

Monday August 15, 2022 10:04 am PDT by
Apple today seeded the sixth betas of upcoming iOS 16 and iPadOS 16 updates to developers for testing purposes, with the updates coming a week after Apple released the fifth developer betas. Registered developers can download the iOS and iPadOS 16 profiles from the Apple Developer Center, and once installed, the betas will be available over the air. iOS 16 introduces a revamped Lock...
apple watch se

Apple Watch SE vs. Apple Watch Series 8: New Features to Expect If You've Waited to Upgrade

Monday August 15, 2022 2:44 am PDT by
The Apple Watch SE was announced in September 2020 and has been a popular Apple Watch model for customers looking for their first smartwatch or an affordable Apple Watch. Apple Watch SE customers may be wondering, however, what's in store for them with the upcoming Apple Watch Series 8 and what new features they can expect. Continue reading to find out. Apple Watch SE vs. Apple Watch Series ...
odyssey ark 1

Samsung Launches $3,500 'Odyssey Ark' 55-Inch Curved Gaming Display

Monday August 15, 2022 7:15 am PDT by
Samsung today announced the launch of the Odyssey Ark, which the company says is the world's first 55-inch 4K curved display with a 165Hz refresh rate for improved gaming performance. Samsung first previewed the monitor at CES, but it is now available to order. Subscribe to the MacRumors YouTube channel for more videos. Priced at $3,500, the Samsung Odyssey Ark features mini-LED technology...
top stories 13aug2022

Top Stories: New Battery Percentage Icon in iOS 16, USB-C AirPods Rumor, and More

Saturday August 13, 2022 6:00 am PDT by
This week brought some shocking news for iOS 16 beta testers, with Apple bringing back the iPhone battery percentage to the status bar after a number of years. Other news and rumors this week included word that Apple has started recording portions of its media event planned for next month to introduce the iPhone 14 and Apple Watch Series 8, claims about iPhone 14 Pro pricing and Apple's...