Is there a way to get a GPX or KML file out of the Phantom, so it can be used with Google Earth or other software, without having to add Flytrex?
Something like this which exists for the Parrot Bebop drone. You can then use the GPX as an overlay, for example in Virb Edit or Dashware.

You can get the fligtdata file from the iPad and convert that, than it can be used like you want it.
I used https://www.flightreplay.com to show my flights. Only 1 for now...

U can use http://flylitchi.com/logs to convert your file.