What about GPS based inputs - ie, you know where 'work' is, and you know where 'the gym' is. And the shops, etc. You could allow GPS tagging of certain locati

What about GPS based inputs - ie, you know where 'work' is, and you know where 'the gym' is. And the shops, etc. You could allow GPS tagging of certain locations and then perhaps track visits to same, reducing the amount of data input needed. I'm not too familiar with iOS, so I'm not sure if this can be done without the app running in 'foreground', though. You could also do this with speed - ie, constant 6 kmh is 'running - exercise', or a constant (average) 60 kmh is 'driving' or 'commuting'.