In this data driven world, health conscious people are actively tracking and analyzing multiple activities like sleep cycle, calories consumed, monitoring bodily functions, etc. Deriving the maximum output from apps is still a challenge for many users and providers as data in silos doesn’t really have power to paint the complete picture of your well being. Imagine a system where an app that monitors your calorie intake and is able to share the calorie consumption data to your fitness/workout app. The workout app, based on this new information, adjusts your activity goals to maintain the desired levels of fitness. HealthKit intends to bring in a holistic approach to your wellness with easy collection and sharing of data among various wellness/fitness and health apps from one centralized location. KEY TAKEAWAYS: Opportunities and challenges in mhealth, wellness and fitness domain HealthKit: The overview, advantages of HealthKit and its usage determining factors HealthKit in action- Live demo HealthKit application areas - Present and future