I was recently running a similar iPhone app called mappiness, which is associated with a research project from the London School of Economics that appears to be all but identical to Track Your Happiness.
A couple of days ago I deleted it, because I found myself unable to give meaningful answers to the three questions it asks, of how happy, relaxed, and awake I am. I ended up with a couple of hundred sample points which, however plotted, looked like random noise.
I had a similar experience with this Track Your Happiness thing.
It ended up becoming annoying to answer the questions, in part because it seemed that my happiness level was almost always the same within measurement error.
The only information that came out of it was that I'm happier when I'm doing what I want to do- and I already knew that.
Track your happiness using your iphone:
Seems like a no-brainer to use this to me, at least if you have an iphone. For those with a droid, according to their twitter feed:
Despite being a really cool app for managing your happiness, this is just a great idea for doing research. Now I want to take advantage of the large iphone/droid user base to learn about people in some way. Any ideas?