I’ve started writing a personal informatics application for Android phones to quickly record moods throughout the day, at random intervals – a technique which seems to be called Experience Sampling. It would work well with a service like your.flowing.data, and I’m intending to add support for uploading to something like that soon.
The motivation is to make use of the rich data that comes from a smartphone to allow a bit of objective introspection into our own lives, to find out what actually makes us tick (a la Quantified Self). I’m intending to start with a mood diary, but then try to correlate this with other data streams that can be captured: my location, the weather; data from my bank balance and diary; perhaps diet or exercise habits.
The code is on github if you’re interested. It builds and runs on my HTC Hero now, but it’s pretty basic – when there are a few more features I might give it a proper licence and release it on Market if there’s interest.