Use accurate satellite positioning from powerful external Bluetooth GPS/Galileo/GLONASS/BeiDou receivers instead of the less powerful internal A-GPS of phones/tablets - for better location accuracy with your favorite Maps and Navigation apps like Google Maps etc.

You must first get an external Bluetooth GNSS/GPS device like the EcoDroidGPS (www.ClearEvo.com) HOLUX Garmin GLO etc to use with this app which is free and open-source software.

If your Bluetooth GNSS/GPS device supports RTK this app also supports overlay of NTRIP server data streams for professional RTK positioning (centimeter-level accuracy - depends on device).

This app supports showing 'Accuracy' estimates from the U-Blox 'PUBX' accuracy messages instead of the commonly used 'HDOP x CEP' method. This PUBX accuracy reading exactly matches as is the same source of the 'Accuracy' as shown in U-Center PC tool when connected directly to the M8030 (EcoDroidGPS) or ZED-F9P (EcoDroidGPS + ArduSimple) devices via USB.