This tool requires a Pro license
This tool can be found in the Toolbox 
When in use the GPS Average tool collects positional information constantly and average that information for increased GPS accuracy. The GPS Averaging tool will show the current GPS location info as well as the running average, accuracy, elapsed time, and number of points collected.
With the GPS Average tool selected, tap the 
play button to start collecting positional data. Tap the 
stop button to stop the data collection, and the
undo button to clear collected data and reset the tool.
When using the GPS averaging tool, tap the 
create a point feature button to digitize a point at the location determined by the GPS Average.
After creating multiple points and tapping the stop button to stop the data collection, the user will be asked if they would like to connect the points into a line or area feature. Two or more points are required to create a line, three or more points are required to create an areas.