Two screens are pretty much always better than one. (That is, unless they’re both being used to watch The View.) So if you’re on-board the Apple train, the idea of using both your iPad and Mac at once probably sounds pretty good. Duet is the app you’ll need to get that done.
Built by ex-Apple engineers, Duet is the first app that lets you use your iDevice as an extra display for your Mac using the Lightning or 30-pin cable. It promises a retina display at 60 frames per second with absolutely no lag, so your work and play will zip right along. As long as you meet the requirements (all Macs 10.9+, all iPads iOS 6.0+, all iPhones iOS 6.0+) you’re good to go. [Purchase]