It does what I need

I use it on Yosemite, El Capitan and even in Snow Leopard and on iOS 6, 7, 8.

As a developer, the MacBook Retinas puny 15 inch screen is nowhere good enough for Xcode and I have spare iMacs without Thunderbolt and an old iPad running iOS 6.

All of these work as extra displays without worrying about cables and target display mode.

Considering that Thunderbolt displays are 1000 bucks, this 20 dollar app saves me 1000 bucks.

It works for me and saves me time I can spend getting work done instead of messing around trying to get external iMacs and devices to see the other computer.

I like it.

zav about Air Display®