Xkey Air sets you free! Super responsive. Xkey Air adds a max 7ms latency compared to most state-of-the-art USB MIDI keyboards, yielding to an unnoticeable delay when playing live performances. Xkey Air has two or three octaves … and a quick-touch button to instantly go 3×3 octaves higher or lower.
The first thing you need to do is download the xkey app as this is how it connects to Bluetooth on your iPad. It works perfectly after that but my only complaint is the power switch is too sensitive. It can switch on or off at the slightest touch.