SleepAnalyzerLiteAndroid

💤 Android sleep tracking app using real-time heart rate sensors (Polar Verity Sense, Polar OH1+, etc.).

SleepAnalyzerLiteAndroid is an open-source app that collects heart rate data during sleep and visualizes hypnograms, sleep phases, and long-term statistics.

It integrates with BLE sensors from Polar to provide detailed insight into sleep architecture and heart performance overnight.

---

📲 App Screenshots & Features

🟢 Tracking Mode

Live visualization of heart rate stream, sensor status, and circular hypnogram clock.

<div align="center"> <img src="Screenshots/sa_tracking.png" alt="tracking" width="300"/> </div>

📊 Report Mode

Displays day-by-day analysis: min/avg/max heart rate and stacked hypnogram durations.

<div align="center"> <img src="Screenshots/sa_report.png" alt="report" width="300"/> </div>

📁 Archive Mode

Scroll through previous nights with visual summaries of sleep structure.

<div align="center"> <img src="Screenshots/sa_archive.png" alt="archive" width="300"/> </div>

🔍 Archive Detail View

Sleep phase timeline + heart rate chart for selected night.

<div align="center"> <img src="Screenshots/sa_hypnogram.png" alt="hypnogram" width="300"/> </div>

🧪 Debug Mode

Visual overlays of sleep phase predictions and adjustable quantization parameters.

<div align="center"> <img src="Screenshots/sa_hypnogram_debug_mode.png" alt="hypnogram debug mode" width="300"/> </div>

---

⚙️ Installation

• Install the Obtainium app
• Add the app via the link of this repository
• You can install and update the app via Obtainium app

---

🛠 Technologies

• Jetpack Compose UI
• Dagger Hilt
• Polar BLE SDK
• Custom circular hypnogram rendering
• Binary sleep computation module via HypnogramComputation.aar

---

📄 License

MIT © Igor Gun