http://itunes.apple.com/us/app/gpslocuspro/id448037853?mt=8 Unzip the package and find the gpslocus.tgz, this is the source code. You can do anything with the source code, include modify, redistribute it. GPSLog7 is a software that can log your gps postion into a GPX xml file, you can check it on the map, share your gpslog with your friends. You can use it to log your walk/bike/drive path of daily life, the path of climbing mountain, the path of a travel, the path of running,etc.
