You can open, make and save a GPX file on your phone.When you have add a waypoint (or loaded your GPX file), you can click on it and see the GPS coord, the distance and the bearing from you.This app is made particulary for the users of the Garmin app "Sailing waypoints" on Garmin watchesTo send your waypoints to your Garmin watch, you need to have Connect IQ installed, and Sailing Waypoints application installed on your watch