FitBit

The FitBit iOS iPhone app helps you track your activity and help you eat better, manage better, sleep better, and much more all with the FitBit app.  Available for iOS on iPhone, iPad, and iPod.

iTunes Description:

The free Fitbit app is designed to work with Fitbit activity trackers and smart scales.

GET ACTIVE. EAT BETTER. MANAGE WEIGHT. SLEEP BETTER.

-Automatically SYNC your Fitbit Force, Flex, One or Zip tracker wirelessly with your iPhone 4S or newer (and other iOS devices that support Bluetooth 4.0)
-Track your DAILY GOALS and progress over time for STEPS, DISTANCE, CALORIES BURNED, ACTIVE MINUTES and more
-LOG FOOD to see how many CALORIES you consume each day, and manage your WEIGHT over time
-COMPETE and compare stats with your Fitbit FRIENDS

Learn more about Fitbit activity trackers and smart scales at www.fitbit.com