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!
Strava - The #1 app for runners and cyclists
Workouts by Muscle Booster - Workouts by Muscle Booster is an app that provides you the home as well as gym workout plans.
Lose it! - Snap a photo of your food to get nutritional facts
Tband - Tband is one of the best mobile apps introduced by Shenzhen Mi Dun Technology Co.
Fitness Coach: Home Workout - Fitness Coach: Home Workout is an interesting app that offers you customized workout programs that are easily integrated with your hectic routines.
Fiti - Fiti is the health and fitness app that provides you with the gym and workout plans that you can do anywhere.