HeartLab vs Withings ScanWatch: ECG Analysis Comparison
Withings ScanWatch offers medical-grade ECG with AFib detection in an elegant watch. HeartLab provides comprehensive arrhythmia detection, advanced HRV analysis, and professional medical reports from Apple Watch ECG recordings.
Feature Comparison
HeartLab and Withings ScanWatch take different approaches to heart monitoring. Withings ScanWatch is a premium hybrid smartwatch with built-in ECG, SpO2 monitoring, and sleep apnea detection. HeartLab is a clinical-grade ECG analysis app that provides comprehensive arrhythmia detection from Apple Watch recordings. While ScanWatch only screens for AFib, HeartLab analyzes the full ECG waveform for multiple arrhythmia types.
| Feature | HeartLab | Withings ScanWatch |
|---|---|---|
| AFib Detection | ✓ | ✓ |
| PVC Detection | ✓ | ✗ |
| PAC Detection | ✓ | ✗ |
| Bigeminy/Trigeminy | ✓ | ✗ |
| HRV Metrics | 12+ | 1 (basic) |
| Poincaré Plot | ✓ | ✗ |
| AI Assistant | ✓ | ✗ |
| PDF Reports | ✓ | ✓ (basic) |
| On-Device Processing | ✓ | ✗ (cloud) |
| SpO2 Monitoring | ✗ | ✓ |
| Sleep Apnea Detection | ✗ | ✓ |
| Respiratory Rate | ✗ | ✓ |
| Cardiac Score | ✓ | ✗ |
| Languages | 16 | 10+ |
| Base Price | Free | Free (with ScanWatch, ~$299) |
Why Choose HeartLab
HeartLab provides the most comprehensive ECG analysis available for smartwatch recordings. While Withings ScanWatch only screens for AFib, HeartLab detects PVCs, PACs, bigeminy, trigeminy, and AFib with detailed waveform analysis. It provides 12+ HRV metrics including Poincaré plots, cardiac scoring, AI-powered explanations, and professional PDF reports that doctors appreciate.
HeartLab processes everything on-device — your ECG data never leaves your iPhone. Withings sends data to their cloud servers. HeartLab supports 16 languages and provides instant analysis, making it the best choice for anyone who wants deep insight into their heart rhythm patterns.
Why Choose Withings ScanWatch
Withings ScanWatch is a premium hybrid smartwatch that combines elegant analog design with medical-grade health monitoring. It features FDA-cleared ECG with AFib detection, continuous SpO2 monitoring, sleep apnea detection, and respiratory rate tracking — health features that Apple Watch and HeartLab don't offer.
ScanWatch's 30-day battery life far exceeds Apple Watch's 18 hours. For users who want a discrete, elegant timepiece with medical-grade heart monitoring and don't need detailed arrhythmia analysis beyond AFib, Withings ScanWatch is an excellent choice. Note: ScanWatch ECG data is not compatible with HeartLab.
FAQ
Does Withings ScanWatch detect PVCs?
No. Withings ScanWatch only screens for atrial fibrillation (AFib). It does not detect PVCs, PACs, bigeminy, or trigeminy. HeartLab detects all of these arrhythmia types from Apple Watch ECG recordings.
Can I use HeartLab with Withings ScanWatch?
No. HeartLab requires an Apple Watch Series 4 or later. Withings ScanWatch uses its own ecosystem (Withings Health Mate app) and does not export ECG data to Apple Health in a format compatible with HeartLab.
Which watch has better ECG hardware?
Both Apple Watch and Withings ScanWatch have FDA-cleared/CE-marked single-lead ECG hardware. The key difference is software: Withings only checks for AFib, while HeartLab (on Apple Watch) analyzes the full ECG for multiple arrhythmias.
Does Withings ScanWatch have HRV analysis?
Withings provides basic HRV data but limited to a single metric. HeartLab provides 12+ HRV metrics including SDNN, RMSSD, pNN50, and a Poincaré plot for comprehensive autonomic nervous system assessment.
Which device has better battery life?
Withings ScanWatch lasts up to 30 days. Apple Watch lasts about 18 hours. However, Apple Watch offers a richer app ecosystem including HeartLab's advanced ECG analysis.
Information accurate as of March 2026. Features and pricing may change. Check respective app stores for the latest details. HeartLab is not a medical device and does not replace professional medical advice.
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.
