G Tracker is an application that uses Android's built-in GPS to track the current position.
It is an application called so-called gps logger.
It also works as a gpx viewer and navigation app.

[About GPS Logger]
GPS logger is a device that records travel routes using GPS satellites.
If you move using a GPS logger you can check what route you followed later.
You can use it for mountain climbing and cycling to check the passing area.

[Main usage]
Power saving and long time gps logger
gps logger for high battery consumption but detailed trajectory data recording
Confirm travel history and routes such as travel and cycling.
Navigation using travel history such as travel and cycling is possible
It is possible to see satellite information of gps.
You can see geotagged photos on the map.
Acquired records can be exported to GPX file and displayed by other applications
GPX files can be imported and used as GPX viewers.

[function]
Record route information.
Create route information.
Record location information at specified intervals.
Graph display of speed and elevation
Confirmation of GPS satellite information
Create markers from geotagged photos.
Route information route information and waypoints are stored in internal memory (GPX).
Night mode support.
GPX file import
Display of photo marker

◇ Notes
Because GPS is used when recording route information battery consumption is large.
Use openstreetmap for map display.