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!
Noisli - Noisli is a fantastic background noise and color generator for working and relaxing. Online soothing ambient sounds like White noise, Rain and Coffee Shop.
Lose it! - Snap a photo of your food to get nutritional facts
Noizio - Feeling that the noise of the big city is too much for you to bear?
Strava - The #1 app for runners and cyclists
zenmix.io - Ambient background sound generator
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.