

- #I want to use ipad as second display for mac via wifi install
- #I want to use ipad as second display for mac via wifi pro
Obviously it’s not designed as a touchscreen OS, so a lot of the user interface elements are rather small for a finger, but for things like weblinks, it makes for a convenient additional means of control. It’s really quite fun to explore what OS X would be like on a touchscreen device. One really nice, uh, touch with Duet is that you can choose to control the apps on the iPad monitor using your Mac touchpad/mouse, or the touchscreen display on the iPad–switching back-and-forth between the two methods as you like.
#I want to use ipad as second display for mac via wifi pro
Updated: My usage on my MacBook Pro 17 was carried out with pre-release software, in which cursor-lag was horrible. But with the latest version installed, responsiveness is–while still compromised–is still perfectly usable. I was incredibly impressed, and think you will be too. It’s indistinguishable from a conventional external monitor, even when playing video. With my MacBook Air, performance is silky smooth.

Duet says that the app works only with 2013 Macs and later (running OS X 10.9 or later), and this is pretty much correct–but not the whole story. I have two Macs: a heavily-upgraded late-2011 MacBook Pro 17, and a 2013 MacBook Air 11. You can also use it as a third monitor alongside a conventional one if desired. In subsequent launches, Duet remembered this setting, so it was a simple, one-off task.
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Reversing that works the same as any other external monitor: just click the Arrangement tab and drag the menu bar back to the Mac display. This looked rather funky, giving a sense of what an iPad running OS X would look like, but isn’t the most useful setup. I found the first time I connected it, it set the iPad screen to be the main one, with the dock and menu bar over on the iPad. Within 2-3 seconds, the Mac will automatically detect the iPad and start using it as a second monitor. To use your iPad as a monitor, simply connect it to your Mac using a standard Lightning or 30-pin cable (I use an Amazon Basics one, mostly because it’s black …) and launch the Duet app on your iPad. On an iPhone 6, it would be pointless, and I’m not convinced it would be that much more useful on an iPhone 6 Plus, but the option is there if you want it. You need to restart your Mac after installing the companion app, and then you’re done.
#I want to use ipad as second display for mac via wifi install
Install the Duet iOS app on your iPad, then install the companion menu bar app on your Mac. Built by ex-Apple engineers, I figured it ought to be work well, so put it to the test … Instead of using WiFi, it feeds the video signal from your Mac to iPad using a standard Lightning or 30-pin cable. Second, even when they do work, there is an annoying amount of lag. First, they often don’t work on WiFi hotspots, which you’re likely to be using when away from home. There are existing apps out there, like Air Display, that let you use an iPad as a second monitor for a Mac, but they work via WiFi, which poses two problems. Sure, I could get a 15-inch Retina MacBook Pro, but I favor physical screen space over smaller screen elements. When travelling, though, I have fewer pixels to play with.

It’s the reason my primary Mac is still a 17-inch MacBook Pro, and why I have that hooked up to a 27-inch Apple Thunderbolt Display when I’m in my home office.
