2. Fitbit

On iTunes: itunes.apple.com
Price: Free

The Fitbit app is free, however, you do need one of their activity trackers! The Fitbit Force and Fitbit Flex are two of the trackers you can look into. If youโ€™re not interested in buying the tracker, this app can still be useful to you. Without a tracker, you can still use the Fitbit app and website to count calorie in-take, log your weight, and record your blood pressure and glucose levels. You can upgrade your account to Premium for $49 a year.