A couple of suggestions

Good app. Im using it. But the toggle colors leave me constantly trying to figure out which answer Im giving. It would be nice if there was more contrast so it will be obvious what I have selected. The other suggestion is to reword the disability questions so we dont have to figure out double negatives. Rather than "unable to attend work... Yes or no," which leaves me unsure how to answer, say "did you miss work...yes or no." It may seem minor but little tweaks like this will keep me loyal to an app.

Jeff! about iHeadache - Headache & Migraine Diary