Core Bluetooth is a framework by Apple that allows developers to integrate Bluetooth Low Energy (BLE) capabilities into iOS and macOS applications. This framework abstracts BLE concepts, enabling devices to communicate wirelessly with minimal power consumption, which is particularly useful for IoT devices and health monitoring systems. Core Bluetooth operates on a server/client model, where devices can function as either a central or a peripheral. This interaction involves discovering services and characteristics on devices to handle data exchange. Developers utilize Core Bluetooth to manage connections, handle data transmission, and ensure secure communication within the BLE ecosystem. However, challenges exist, such as data size limitations, security concerns, and maintaining stable connections. Despite these challenges, Core Bluetooth remains a crucial tool for developing applications that require seamless wireless communication, as seen in various health and IoT applications. The framework also involves a learning curve, requiring developers to understand BLE's intricacies to fully leverage its capabilities in building robust and efficient wireless communication solutions.