I recently used an app called Ultra GPS Logger on Android Samsung Galaxy S2 to track my 1st solo cross country flight. I enabled flight mode to avoid interference and just used the in built GPS. I have also used it in the circuit and it is amazingly accurate.
You can view the track on the phone using either Google Maps or Google Earth, email it etc
Here is the track imported into Google Earth:
https://www.dropbox.com/s/dup7eev9738lfgp/soloxc.jpg