Motorola Photon 4G :: Free App To Track It By Gps Signal?

I won a full life support of Cerberus, but i don't like it: it depends on internet connection, not a gps conn. I use EDGE conn to saves battery, everytime i make or receive calls i lost the edge during the calls, when i end them the edge comes back on, and i have to log everysingle time i enter the net with cerberus, is not worth it. what happend if i lost my phone and the phone is not logged in Cerberus? Crappy app. I wanna know a good free app that only depends on GPS track, i let my tablet and my phone with gps on. Or even if depends on internet conn, that it saves my id and password and log it self. But i really prefer one with gps, coz my tablet is only wifi and doesn't send or receives sms's.