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
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Lose it! - Snap a photo of your food to get nutritional facts
TaskPaper - Plain text to-do lists for Mac
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.
Microsoft To-Do - Task management tool