Senilo Work Time Reporter (se.complexit.senilo) on Google Play
Senilo help you keeping track of how much you have worked. When you are walking around with your phone, Senilo will recognize whether you are at home or at work using the WiFi networks that are around you.You can also export your event log in CSV format and use it in e.g. Excel.You don't need to be connected to the WiFi network you have specified.