$OE really missed the boat on apps. An app where I could tradeskill with my character and make progress or shop and buy on the broker and it be there when I log in. plus a ton of other things is how an 'app' should have been integrated into the game, to keep me playing EQ2 instead of clash of clans et al.
Not sure what your question means, but there are several EQ2 specific apps. None of them have in-game play - they all just read data from the game. Just do a search - https://play.google.com/store/search?q=EQ2&c=apps There are several. And there is the EverQuest Worlds app that will get you some in game goodies https://play.google.com/store/apps/details?id=com.firstpost.eqw