Heart Rate Monitor

A lightweight heart rate monitoring app for Android, built with Jetpack Compose and Material 3. Connect to BLE heart rate monitors and track your heart rate in real time.

Features:

- Bluetooth LE heart rate monitoring: scan and connect to any BLE heart rate device

- Real-time heart rate display with animated heart icon

- Floating window overlay for always-on heart rate display

- Status bar heart rate indicator with auto color adaptation

- Heart rate history with chart analysis (powered by Vico)

- Heart rate alerts with posture detection (sitting/standing/exercising)

- HTTP server and WebSocket server for real-time data streaming

- Webhook support for pushing heart rate data to external services

- Favorite devices with auto-connect

- Fully customizable UI: colors, opacity, corner radius, size

- Material 3 design with dynamic color support (Android 12+)

- Fair memory management for Chinese OEM devices (vivo, Xiaomi, OPPO, Honor)

- Privacy-friendly: no tracking, no ads, no analytics

Open source under MIT License.