All Features
HeartLab turns your Apple Watch ECG into a powerful diagnostic tool. Explore every feature designed to help you understand your heart health.
PVC Detection
Detect Premature Ventricular Contractions in Apple Watch ECG recordings using the Pan-Tompkins algorithm with morphology analysis.
Learn More →PAC Detection
Identify Premature Atrial Contractions with rule-based analysis of R-R intervals and beat morphology from your Apple Watch.
Learn More →Bigeminy & Trigeminy
Detect bigeminy and trigeminy PVC patterns automatically. The only consumer app to identify these complex arrhythmia patterns.
Learn More →HRV Analysis
12+ Heart Rate Variability metrics including SDNN, rMSSD, pNN50, SD1, SD2. The most comprehensive HRV from Apple Watch ECG.
Learn More →Poincaré Plot
Visualize heart rate variability with interactive Poincaré scatter plots. See autonomic nervous system patterns at a glance.
Learn More →AI-Powered Explanations
Get your ECG results explained in plain language by AI. Personalized insights that help you understand your heart rhythm.
Learn More →Medical PDF Reports
Generate professional PDF reports with ECG waveforms, measurements, and HRV data. Share with your doctor in a format they trust.
Learn More →ECG Trends
Track heart rate, HRV, QTc interval, and arrhythmia frequency over days, weeks, and months. Identify patterns over time.
Learn More →Cardiac Score
A single comprehensive score combining ECG analysis, HRV metrics, and arrhythmia data to rate your overall heart health.
Learn More →100% On-Device Privacy
All ECG analysis runs on your iPhone. Your heart data never leaves your device. No cloud uploads, no third-party access.
Learn More →Wellness Features
Guided breathing exercises, meditation, mood tracking, and health journaling. Complete heart wellness beyond ECG analysis.
Learn More →16 Languages
Full ECG analysis in 16 languages including English, Italian, German, Spanish, French, Japanese, Korean, Arabic, and more.
Learn More →Get Advanced ECG Analysis on Your Wrist
HeartLab delivers clinical-grade ECG analysis directly from your Apple Watch — arrhythmia detection, HRV analysis, and professional reports.
