This application is designed to provide distance measurements in real time from your current location and storage of hot spots using GPS. Markers can be placed at designated locations by clicking on the screen, dropping a marker at the current location or by entering coordinates. Can store comments with each marker and find markers by comment. Bread crumb trails can be turned on to mark the paths. The number of markers placed is limited by the storage capacity on the device. Quick zooming to current location for rapid viewing. Can be used to measure distances and mark hot spots from anywhere. Now with the new compass feature you can use the compass to guide you to any marker location! Great tool for hunting Mushrooms!