I activated it and went to website to "Locate" my phone... it's about half mile off. Also would not send me "phone info", got stuck on "sent message, waiting". I don't get a cell signal at home, don't get GPS indoors, and WiFi is half mile off... how can this app do anything for me if my cell is stolen? I also read somewhere that background Sync has to be active, which mine is almost always turned off. Any thief serious about steeling a cell phone is going to know to put it in airplane mode and leave WiFi off... he's got your memory card at the least.
OK, I see if you tend to leave your phone places, this might be handy. So you only have to search a half mile radius
or you can set the alarm off that would let any potential thief know where you phone is... or an irritable person might throw it against a wall to stop the alarm. Seems the app could be more of a risk than a help.