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!
Future Me - Send an email to your future self
Strava - The #1 app for runners and cyclists
Letter to my future self - Letter to my future self is a prominent email scheduling service that gives you the opportunity to create a letter with goals and thoughts for your future self and schedule a date for sending it.
Lose it! - Snap a photo of your food to get nutritional facts
Dabble Me - Your own private place to write. A journal/diary to help you remember what's happened in your life.
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.