MacRumors Giveaway: Win a Luna Display Adapter to Turn an iPad or Mac Into a Second Screen

For this week's giveaway, we've teamed up with Astropad to offer MacRumors readers a chance to win a Luna Display adapter that can turn an extra Mac or iPad into a secondary display for a primary Mac.

luna display macbook
Priced at $130, the Luna Display adapter dongle is designed to plug into a Mac using a USB-C port (on newer Macs) or a Mini DisplayPort, and when paired up with the Luna Display software, a main Mac (or even a PC) can be connected to an ‌iPad‌ or another Mac using Wifi.

With this setup, you can take advantage of old hardware or add an extra display to your workflow without having to spend money on another device.

lunadisplay2
The Luna Display extends a Mac's display to the secondary Mac or ‌iPad‌, allowing the device to be used as a second screen, something that's especially useful as people continue learning and working from home.

Apple's ‌iPad‌ and Mac do have a built-in Sidecar function that can turn an ‌iPad‌ into a secondary display for a Mac without the need for an accessory, but this only works with a Mac and an ‌iPad‌ while the Luna Display supports Mac-to-Mac connectivity. Luna Display is also able to work with older iPads that don't support ‌Sidecar‌.

lunadisplaymactomac2
Starting this fall, Apple will allow Mac to Mac AirPlay with macOS Monterey, but Luna Display still has multiple benefits over ‌AirPlay‌ technology. ‌AirPlay‌ is limited to newer Mac models and up to 1080p display resolution, and the trackpad and keyboard only work with the primary Mac.

lunadisplaymactomac
Luna Display offers full native resolution, works with older Mac models, offers keyboard and trackpad support for both Macs, and offers low latency performance. As of May, the Luna Display's Mac-to-Mac feature works over Ethernet and Thunderbolt in addition to WiFi.

With Mac-to-Mac mode, the primary Mac needs to be running OS X El Capitan or later, while the secondary Mac can be running OS X Mountain Lion or later, so the dongle works with machines that are quite old, giving them new life. For the best performance, Astropad suggests a 2012 MacBook Air, MacBook Pro, Mac mini, iMac, or later, or a 2013 Mac Pro or later.

Luna Display provides full keyboard, trackpad, and mouse support on both connected Macs in Mac-to-Mac mode, and it has native support for M1 Macs. PC owners can use the Luna Display adapter for Windows, which extends the desktop from PC to ‌iPad‌, allowing devices to work interchangeably.

lunadisplay3
For iPads, the Luna Display is compatible with the ‌‌iPad‌‌ 2 or later, all iPad mini models, all iPad Pro models, and all iPad Air models, with iOS 9.1 or later as the only requirement. Performance is faster on newer iPads, but older models work well too.

lunadisplay4
We have five Luna Display adapters to give away to MacRumors readers. To enter to win, use the Gleam.io widget below and enter an email address. Email addresses will be used solely for contact purposes to reach the winners and send the prizes. You can earn additional entries by subscribing to our weekly newsletter, subscribing to our YouTube channel, following us on Twitter, following us on Instagram, or visiting the MacRumors Facebook page.

Due to the complexities of international laws regarding giveaways, only U.S. residents who are 18 years or older and Canadian residents (excluding Quebec) who have reached the age of majority in their province or territory are eligible to enter. To offer feedback or get more information on the giveaway restrictions, please refer to our Site Feedback section, as that is where discussion of the rules will be redirected.

The contest will run from today (July 16) at 11:00 a.m. Pacific Time through 11:00 a.m. Pacific Time on July 23. The winners will be chosen randomly on July 23 and will be contacted by email. The winners will have 48 hours to respond and provide a shipping address before new winners are chosen.

Popular Stories

iPhone 17 Pro and Air Feature

Two iPhone 17 Pro and iPhone Air Colors Appear to Scratch More Easily

Friday September 19, 2025 10:02 am PDT by
As reported by Bloomberg today, some of the new iPhone 17 Pro and iPhone Air models on display at Apple Stores today are already scratched and scuffed. French blog Consomac also reported on this topic. The scratches appear to be most prominent on models with darker finishes, including the iPhone 17 Pro and Pro Max in Deep Blue, and the iPhone Air in Space Black. Images Credit: Consoma ...
iOS 26

iOS 26.0.1 Coming Soon, Likely With iPhone Air and iPhone 17 Pro Fix

Thursday September 18, 2025 9:17 am PDT by
Apple is preparing to release iOS 26.0.1, according to a private account on X with a proven track record of sharing information about future iOS versions. The update will have a build number of 23A350, or similar, the account said. It is likely that iOS 26.0.1 will fix a camera-related bug on the new iPhone Air and iPhone 17 Pro models. In his iPhone Air review, CNN Underscored's Henry T. ...
iPhone 17 Pro Colors

iPhone 17 Pro Max Teardown Reveals Qualcomm's Snapdragon X80 Modem for 5G

Friday September 19, 2025 7:39 am PDT by
While the iPhone Air is equipped with Apple's custom C1X modem for cellular connectivity, all of the iPhone 17 models are outfitted with Qualcomm modems still. A teardown video shared on Chinese platform Bilibili today (via Reddit) appears to confirm the iPhone 17 Pro Max is equipped with Qualcomm's Snapdragon X80 modem in particular. The same modem is likely used in the iPhone 17 and iPhone ...
iphone 17 pro max techwoven

Here Are The Best Cases You Can Buy for Your New iPhone 17 and iPhone Air

Friday September 19, 2025 6:46 am PDT by
Apple's new iPhones launch today, and there are plenty of options to choose from when it comes to protecting your new device from drops and scratches. In this article, we're taking a look at some of the best options for iPhone 17, iPhone 17 Pro, and iPhone 17 Air cases, as well as a few charging accessories. Note: MacRumors is an affiliate partner with some of these vendors. When you click a...
iOS 26 on Three iPhones

iOS 26's Liquid Glass Design Draws Criticism From Users

Wednesday September 17, 2025 2:56 pm PDT by
It's been two days since iOS 26 was released, and Apple's new Liquid Glass design is even more divisive than expected. Any major design change can create controversy as people get used to the new look, but the MacRumors forums, Reddit, Apple Support Communities, and social media sites seem to feature more criticism than praise as people discuss the update. Complaints There are a long...
iphone 17 pro inside

iPhone 17 Teardowns Confirm SIM and eSIM-Only Battery Capacities

Friday September 19, 2025 8:39 am PDT by
YouTube channel REWA Technology today shared an iPhone 17 Pro teardown video, offering a closer look inside the model with a SIM card tray. We are still waiting for repair website iFixit to share a more comprehensive teardown of the latest iPhone models, but this video provides a good look in the meantime. The device features various internal design changes, including larger rear camera...

Top Rated Comments

Apple_Robert Avatar
55 months ago
I was supposed to win this last time. It appears my winning email got lost in the mail. I will have to win this one.
Score: 5 Votes (Like | Disagree)
Sciomar Avatar
55 months ago

I was supposed to win this last time. It appears my winning email got lost in the mail. I will have to win this one.

This wouldn't be particularly useful for me, so I'll hold off entering to give @Apple_Robert's competitors better odds.
I only sign up for these to keep him from winning?
Score: 4 Votes (Like | Disagree)
TheYayAreaLiving ?️ Avatar
55 months ago
Not sure If I need this. @Apple_Robert You can have this one so you can always be the 1st one to comment :) That external display will help you out.

Vote: @Apple_Robert +1

Vote for @Apple_Robert
Score: 3 Votes (Like | Disagree)
Westside guy Avatar
55 months ago
This wouldn't be particularly useful for me, so I'll hold off entering to give @Apple_Robert's competitors better odds.
Score: 3 Votes (Like | Disagree)
Eso Avatar
55 months ago
Seems to me like we already have a winner
Score: 1 Votes (Like | Disagree)
alee Avatar
55 months ago
One thing Luna does that Sidecar can't: mirror flip the 2nd display so it can be used with a teleprompter.

Zoom calls are awesome with a teleprompter.
Score: 1 Votes (Like | Disagree)