This application is for Pocket PC running Windows Mobile 2003 (it may work on other systems but it is tested to work with my iPAQ). You enter in the start time (or click the start button and it marks the time down) and then end time (or click the end button) and then select how much you want to charge per hour. TimeCalc will work out how many minutes you have spent on site and the total cost of the job. You can then save that information to a file for downloading / creating invoices later.
It downloaded in about one second, then the installer quit on me. I tried again with the same results. I really need this program, and I have been looking for something just like it for some time now. I am running XP SP2, and the latest ActiveSync, so this shouldn't have occured.