Measuring Observations of Daily Living with ODK

The BreathEasy application is designed to be an easy-to-use tool that
allows study participants to enter observations of daily living (ODLs)
such as peak flow readings, asthma triggers, stress and activity
levels, sleep patterns, symptoms and medication use.

BreathEasy is built using ODK tools and you can find out more
http://projecthealthdesign.typepad.com/project_health_design/2011/03/breatheasy-android-application-and-web-dashboard-design.html