Heh, the last program I ever wrote (used to be an IT wiz) was such a counting app, which gives me days & money saved. I changed it 2.5 years ago to also include smoking. So far I saved (roughly, in USD) 42,000 for both combined.

As you say, for some it helps, for others it makes them nervous. I look at the "score" almost every day. I like the little ritual.

I didn't include a reset button as it wasn't in the specs.