The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
GPS-Track just tracks the GPS distance in a very simple way.Start it -> Move -> Stop it -> Check Distance -> Reset it.Thats it. Have fun!Please note: Continued use of GPS running in the background can dramatically decrease battery life.