I use an antenna tracker that tracks my apm2.6. I know that now that you can make them so you just put one APM on the tracker and one of course on the craft and it tracks it.
Does anyone know of a phone app that can do the same thing? Like a friend finder app but with a compass display instead so that you can put a phone somewhere and each phone would indicate the direction (heading) to the other phone. Seems simple but I'm having no luck finding one. Can be for iPhone or android.