SailFreeGPS is a free Android app designed for sailors, offering a range of features to enhance navigation and safety on the water. Key functionalities include real-time tracking of current location, course over ground (COG), speed over ground (SOG), and a magnetic compass. The app also maintains a 6-hour history of COG and SOG, allowing users to analyze their sailing performance and make necessary adjustments to their sails. Notably, SailFreeGPS provides essential safety features such as a Man Overboard (MOB) function, which records the location of a person overboard and guides the user back to it.

In addition to basic navigation tools, SailFreeGPS supports the storage of waypoints and the calculation of estimated time of arrival (ETA). Users can also activate an anchor alarm and a course alarm for added security. The app allows sharing of position information with friends and displays tracks on Google Maps for up to 48 hours. With both free and premium versions available, users can enjoy an ad-free experience and access advanced features like enhanced waypoint management and full-screen graph displays.