I had pretty cool app for WM6. Here is source code for Visual Studio 2008: http://dl.dropbox.com/u/1228109/TimeControl.rar Writen by covr from 4pda.ru He has not much time. Can someone port it to Android, please? His description: Wrote program that keeps track of time spent by pressing a single button - Start / Stop. The task's name, then it will remain in the standard calendar PocketOutlook with the category "Completed tasks". Duration of the task is reflected in the calendar, and equal to the period between pressing the "Start" and "Stop". The program remembers the time you press the "Start", so you can safely close and even soft-reset to make devices. The next time you start the program automatically remembers the last start time. The program is free.