Since its development, the Apple Watch has struggled to gain widespread popularity despite being an extension of the iPhone, yet it offers engaging features for both users and developers. This demo project utilizes HealthKit to access heart rate data, which is then published to PubNub and used to control a Raspberry Pi that lights an LED based on the heart rate. The iPhone app displays real-time data in an EON chart and integrates with Twitter’s Fabric to allow users to tweet their workout sessions. The setup involves multiple platforms, requiring configuration in XCode for WatchOS applications, installing PubNub via CocoaPods, and setting up TwitterKit and Crashlytics with Fabric. The project involves complex data exchanges between the Apple Watch, iPhone, and Raspberry Pi, highlighting the challenges of data synchronization across devices. Despite the intricacies, the project demonstrates the capabilities of wearable technology and provides a foundation for further exploration of integrating hardware with health data and social media interaction.