human
I'd like to know the difference between a sat nav and a GPS.
assistant
A Sat Nav is a Global Positioning System (GPS) receiver that can be used to calculate a route, while a GPS is a system that uses satellites to determine location. A Sat Nav will use information from your current location, as well as map data stored in its memory, to calculate the best route to your destination. A GPS will use satellite signals to calculate your exact position on Earth.