For about 80 percent of us, the only gps app ever used will be googlemaps. I know that you can put a single icon on you desktop to turn on and off your gps. But what typically happens to me is that I am on the road, use google maps, and forget to turn the gps off. I think everyone knows how fast the battery can drain with the GPS on. Is there a setting or an app that can enable gps when opening google maps and disable it when exitting. I hate finding myself away from home with a dead cell phone battery, typically that is the same time that I find out I have left my cell charger in the other car. I can't imagine there isn't some way to accomplish this since the gps is such a drain.