BLE Heart Rate Monitor Demo

An iOS demo app showcasing Bluetooth Low Energy communication using SwiftUI, Combine, and CoreBluetooth.
This project connects to a BLE heart rate sensor and displays real-time BPM values with animated feedback.

There is also a companion ESP32 HR Simulator for easier testing, especially of 16-bit values as described below.

Features

• Scans for BLE peripherals advertising the Heart Rate Service (UUID 0x180D)
• Subscribes to the Heart Rate Measurement characteristic (UUID 0x2A37)
• Displays incoming heart rate values with heartbeat animation
• Handles both 8-bit and 16-bit heart rate formats, as specified in the Heart Rate Profile
• Written in Swift 5 with Complete Strict Concurrency Checking

Requirements

• iOS 16.0+
• Real iOS device (BLE is not available in the simulator)
• Heart rate monitor supporting BLE (some Garmin models are ANT+ only) or the simulator

Screen Recording