TimeTracker is an application to record your working time, associate it with projects, and annotate it with comments. Starting with version 4.0 you can control time recording not only manually but also automatically by entering or leaving a WiFi or GPS area. At the end of the month (or any other time) you can display your data in various charts and you can email a detailed spread sheet with your working time. This is the full version without any limitations. There is also a lite version of this application available called "TimeTracker" (without "Full").