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
Android Things Lantern - Real-world AR with Google's new IoT platform
Lose it! - Snap a photo of your food to get nutritional facts
Fluxo - Financial modeling software for SMBs.
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.
Brightup - The first truly smart lighting system.