Fitbit has everything I need, the steps, the Heart Rate, it has all of my exercising modes, and it has a fair price. It has a rather simplistic User interface, which I really like to be honest. Highly recommened!
Weight Watchers - Weight Watchers is the best weight monitoring application that is designed to assist the users to not only lose their weight but also score benefits that go beyond seeing a smaller number on the scale.
Strava - The #1 app for runners and cyclists
PEAR Personal Coach - PEAR Personal Coach is a real-time health monitoring, and fitness tracking app that allows the users to keep their health monitored all the time.
Lose it! - Snap a photo of your food to get nutritional facts
Fitocracy - Fitocracy is a social network that turns exercise into a cooperative and competitive exercise with friends, rivals, and strangers.
Workouts by Muscle Booster - Workouts by Muscle Booster is an app that provides you the home as well as gym workout plans.