Run Time

Hello, and Happy New Year!

I was looking for an app that calculated run time for a device. ie What was the run time of a light today, this week, this month, since 12/01/2011 2:13pm?

it would also be great to trigger after so many hours. ie Turn on filter change light after 100 hours of run time.

I was looking at datamine but that does a superb job graphing but does not do this job.

Does anyone have an idea of an app that does this?

Cheers!