Saga – The Essential Lifelogging App automatically keeps track of everything you do in a way that's easy for everyone. The app keeps record of how much time you spend in transit, at work, at recurring activities, and the places you visit the most.
TUAW reports that the app also has a "Now" button that, when tapped, displays your location and the total hours that you've been running the app. There's also a "Snaps" button that quickly takes four images to go along with your current location.
It certainly sounds like an easier way to keep track of your everyday activities, though I can already tell you that I spend all day at the office and that every photo of me will have coffee included in it.