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!
Lefun Health - Lefun Health is one of the best health companion app featured with a pedometer and heart monitor that continually calculates your heartbeat and total steps throughout the day.
Strava - The #1 app for runners and cyclists
Lose it! - Snap a photo of your food to get nutritional facts
Amazfit GTS WatchFaces - Amazfit GTS WatchFaces is an app that allows you to access new and beautiful watch faces for your smartphones.
SmartHealth - SmartHealth is a health and fitness app that effectively monitors and records your sleep patterns and various health-related parameters such as heart rate, blood pressure, etc.
Feisar Watch Face - Feisar Watch Face is an interactive mobile app offered by thema that provides you a variety of beautiful watch faces and clock widgets for your mobile phone.