Below is a compilation of apps we, at San Francisco Sport and Spine Physical Therapy have used or had recommended that work well and align with what we do to get people better and help them stay that way!
If you have a particular favorite, please email firstname.lastname@example.org with your suggestion.
MyFitnessPal -- calorie and exercise tracker
The Habit Factor -- great for creating new habits around exercise, activity or anything
Chronic Pain Tracker
My Pain Diary: Chronic Pain Management
ZamZee.com - Fitness meter for the whole family, including kids!