This application forwards NMEA data from your phone's GPS to a specified host. It's goal is to easily plug and feed data into a GPS server service (e.g. GPSd), using your cellphone as a GPS device. This way, your cellphone can be used as a GPS in navigation or robotics applications running in a host computer.
Data is forwarded using UDP. First, make sure the computer's IP is reachable from your cellphone; this is the case in most default access points, so it should work if both are connected to the same WiFi network.
On the host machine, execute gpsd -N udp://<cellphone IP or * to accept any>:<port to listen at> (e.g. gpsd -N udp://*:29998). In the Android app, enter your host's IP and port and hit Start. Your host is now receiving GPS data forwarded from your phone. You can test it with gpsmon or other GPSd utilities.