I know that I can install rekordbox on my iPad and have some functionalities with it.
I am not really want to use the iPad providing tracks to the set.... might be useful at some Point in time but if I want to use rekordbox for playing a set I would bring my Laptop. I think the functionality on the iPad is just Basic...
However I would love to use the iPad as a kind of remote Control or second Screen i.e. to Control 1 or 2 CDJ / XDJ, view track Information, hot cues / Memory cues.
Not sure how this could be implemented either via Network (wireless) or i.e. via ProDJ Link and USB Connection to a mixer like the DJM-900nxs2.
But if possible it could gain a lot of flexibility while in a set.