The Gearhead column has been keeping tabs on the best Android apps for IT workers. Here's the cream of the crop
If you are seriously into tracking where you go, you will have to discover the wonders of the excellent mapping apps on Android and, for many of them, their excellent integration with Google Maps. Among the many free tools I've tried there's one that appeals immensely to me not just because it's incredibly geeky and ambitious in its functionality but also because it's actually useful. The tool is GPS Essentials.
This app reports on all the stuff you want to know about, including GPS accuracy, altitude, speed, battery charge, bearing, climb, course, date, declination, distance, estimated time of arrival, latitude, longitude, maximum speed, minimum speed, actual speed, true speed, sunrise, sunset, moonset, moonrise, and moon phase. There's also heads-up display that uses the phone's camera to show you waypoints, Google Maps integration, and waypoint import and export in Google Earth KML format! Another 5 out of 5 rating.