I don't use any user data. nothing whatsoever is transmitted, from Cookie.
I have no idea how ppl use Cookie, and don't track d/l's of Trial versions at all.
I do have Google Analytics running on SweetP Productions, but rarely even look at it.
To be honest, all I care about is making a quality app, and of course paying my bills.
the Trial version checks my servers once a week for updates
the MAS version validates its integrity with Apple (on Launch, and most likely checks for updates)
I also have the list of the Trial user licenses - Name/Email/price they paid (mainly for reissue of lost licenses. (I currently don't send out any newsletters or such)
I have no data at all about MAS purchases. Apple doesn''t provide me with any user data whatsoever.