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 3 4ths Perspective Aluminum Camera Module 1

New iPhone 17 Pro Details: Brighter Display, Best Battery Life, and More

Wednesday September 3, 2025 5:33 am PDT by
Apple's iPhone 17 Pro and iPhone 17 Pro Max models will feature a number of significant display, thermal, and battery improvements, according to new late-stage rumors. According to the Weibo leaker known as "Instant Digital," the iPhone 17 Pro models will feature displays with higher brightness, making it more suitable for use in direct sunlight for prolonged periods. The iPhone 16 Pro and...
iPhone 17 Pro Iridescent Feature 2

iPhone 17 Pro Clear Case Leak Reveals Three Key Changes

Sunday August 31, 2025 1:26 pm PDT by
Apple is expected to unveil the iPhone 17 series on Tuesday, September 9, and last-minute rumors about the devices continue to surface. The latest info comes from a leaker known as Majin Bu, who has shared alleged images of Apple's Clear Case for the iPhone 17 Pro and Pro Max, or at least replicas. Image Credit: @MajinBuOfficial The images show three alleged changes compared to Apple's iP...
iphone 16 pro ghost hand

iPhone 17 Pro: 5 Reasons Not to Upgrade This Year

Monday September 1, 2025 4:35 am PDT by
Apple will launch its new iPhone 17 series this month, and the iPhone 17 Pro models are expected to get a new design for the rear casing and the camera area. But more significant changes to the lineup are not expected until next year, when the iPhone 18 models arrive. If you're thinking of trading in your iPhone for this year's latest, consider the following features rumored to be coming to...
iPhone 17 Pro Iridescent Feature 2

iPhone 17 and iPhone 17 Pro Prices Estimated Ahead of Apple Event Next Week

Tuesday September 2, 2025 1:50 pm PDT by
Just one week before Apple is expected to unveil the iPhone 17 series, an analyst has shared new price estimates for the devices. Here are J.P. Morgan analyst Samik Chatterjee's price estimates for the iPhone 17 series in the United States, according to 9to5Mac: Model Starting Price Model Starting Price Change iPhone 16 $799 iPhone 17 ...
iPhone 17 Pro Dark Blue and Orange

iPhone 17 Release Date, Pre-Orders, and What to Expect

Thursday August 28, 2025 4:08 am PDT by
An iPhone 17 announcement is a dead cert for September 2025 – Apple has already sent out invites for an "Awe dropping" event on Tuesday, September 9 at the Apple Park campus in Cupertino, California. The timing follows Apple's trend of introducing new iPhone models annually in the fall. At the event, Apple is expected to unveil its new-generation iPhone 17, an all-new ultra-thin iPhone 17...
iOS 18 on iPhone Arrow Down

Apple Preparing iOS 18.7 for iPhones as iOS 26 Release Date Nears

Sunday August 31, 2025 4:35 pm PDT by
Apple is preparing to release iOS 18.7 for compatible iPhone models, according to evidence of the update in the MacRumors visitor logs. We expect iOS 18.7 to be released in September, alongside iOS 26. The update will likely include fixes for security vulnerabilities, but little else. iOS 18.7 will be one of the final updates ever released for the iPhone XS, iPhone XS Max, and iPhone XR,...
iPhone 17 Pro on Desk Centered 1

Survey: Nearly 70% of Users Plan to Upgrade to iPhone 17

Monday September 1, 2025 8:24 am PDT by
A new survey has found that nearly seven in ten iPhone owners in the United States plan to upgrade to an iPhone 17 model, signaling strong demand ahead of Apple's expected unveiling of the devices at its September 9 keynote. Smartphone price comparison platform SellCell surveyed over 2,000 U.S.-based iPhone users in August to assess upgrade interest and brand loyalty before Apple's event....

Top Rated Comments

Apple_Robert Avatar
54 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
54 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
54 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
54 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
54 months ago
Seems to me like we already have a winner
Score: 1 Votes (Like | Disagree)
alee Avatar
54 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)