The "vision utility plus" app has data logging which will give you long/lat coordinates. Only costs like $10 to purchase from play store.
Besides long/lat you will get data on the following from the app
latitude longitude altitude(feet) ascent(feet) speed(mph) distance(feet) max_altitude(feet) max_ascent(feet) max_speed(mph) max_distance(feet) time(millisecond) gps power pitch roll yaw motor on
The GPS field is the amount of satellites aquired.. e.g 8
*edit* oh ya the app also outputs a .kml file which I believe you can load into google earth. Never tried that myself though.