Future - Calendar events around the clock
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.
Loxi - Easily add an events calendar to any website.
Fitness Coach: Home Workout - Fitness Coach: Home Workout is an interesting app that offers you customized workout programs that are easily integrated with your hectic routines.
Whenever - Casual calendar app for iOS
fitbit - The Fitbit mobile app is for people who use Fitbit fitness trackers to keep track of their activity goals, food plans, and other fitness related things. Read more about fitbit.