food logging
MyNetDiary's popular food tracking app
When it comes to weight loss, a simple food tracking application like MyNetDiary or MyFitnessPal might be a much better investment than $100 Fitbit or Jawbone device, at least according to newly released data from the Activity Exchange, a startup that aggregates health tracking data for payers, employers, and providers.
The updated Fitbit app tracks frequency of exercise on a calendar.