Duet is an application that allows you to use your iPad as an extra display for your Mac or PC using the Lightning or 30-pin charging cable. Duet was built by ex-Apple engineers. It is able to delivering a retina display at 60 frames per second with zero lag. It truly needs to be seen to believed.
I have been using Duet for over a year now. It is extremely useful when you need an additional display. I often use it when I am working on my laptop at trainings or conferences. I have found that it works the best with iPads with the Lightning connector. It is absolutely flawless when I use it with my iPad Air 2.
Whether you'd like to increase productivity, add a touch screen, or just have more space for your Mac, duet is the perfect solution.
Duet is compatible with all desktops running OS X 10.9+ or Windows 7+. It is compatible with all iPads and iPhones that are running iOS7+.