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!
Zenobase - Zenobase helps store and visualize data.
Strava - The #1 app for runners and cyclists
Exist - Track everything in one place, understand your life.
Lose it! - Snap a photo of your food to get nutritional facts
Coach.me - Coach.me is a coach that goes everywhere with you, helping you achieve any goal, change any habit, or build any expertise.
Workouts by Muscle Booster - Workouts by Muscle Booster is an app that provides you the home as well as gym workout plans.