FFXIV App becomes ban worthy when used against players. For instance, i see this all the time. "Sorry (player name here) you had the lowest DPS and we failed." *kicked from party* This is a form of harassment. Thats why ppl get banned for parsing. If used to better your own DPS or to help someone then it isn't harassment or breaking the game in any way. I used the app to help me figure out my monk rotation. I got it up to 289 DPS(i70 MNK) on a training dummy after a few hours but i wouldn't have been able to do that even in a few days w/o the parser. (I like to learn on my own rather than watch videos.) So my rotation is from scratch, by me. Going to try again when i get to i90 to see how far above 300 i can go. betting 330 at least...) Unfortunately, the only end game bosses i can get that on are chimera and hydra assuming they dont move to cast circles on themselves....Looking at you hydra!
Anyway, this is an example of what the APP should be used for. Not as a tool to kick the weakest link. Keep in mind that kicking is reportable and should be used sparingly. Too many reports and you get banned...