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!
MeasureTalk - Body measurement App - Measure your body to get best fitting clothes in your closet
Strava - The #1 app for runners and cyclists
Pillo - Your personal home health robot
Lose it! - Snap a photo of your food to get nutritional facts
PainScale - Find treatments for your chronic pain
Workouts by Muscle Booster - Workouts by Muscle Booster is an app that provides you the home as well as gym workout plans.