By using such app, it can automatically calculate the perimeter and the area of your tracks. You only need to take this phone and walk around the land to be measured, and this app can automatically count entire track length, perimeter and area of the region enclosed by your tracks. Moreover, you can manually encircle a space to calculate its perimeter and area, which will bring great convenience for outdoor enthusiasts, agricultural technicians and farmers.
** Support export track file with ".gpx" format ! **