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!
iFit – Workouts at Home - iFit – Workouts at Home app allows users to access an extensive collection of thousands of home workouts with advice and motivation from world-class fitness trainers.
Strava - The #1 app for runners and cyclists
Lose it! - Snap a photo of your food to get nutritional facts
BitGym - Virtual Cardio Tours. No heart rate sensor of special hardware required.
Workouts by Muscle Booster - Workouts by Muscle Booster is an app that provides you the home as well as gym workout plans.
FITIV Pulse - Taking heart rate data and fitness tracking to a new level.