Best Smartwatch for Heart Health 2026: ECG, AFib Alerts, and Continuous Monitoring
Best heart-health smartwatch 2026: ECG, AFib alerts, continuous monitoring, Apple Watch Series 10, Galaxy Watch 7 and ScanWatch 2.
Heart health guide 2026
A heart-health smartwatch can help track resting heart rate, effort zones, irregular rhythm alerts, and sometimes take a wrist ECG. In 2026, buyers most often compare Apple Watch Series 10, Samsung Galaxy Watch 7, and Withings ScanWatch 2.
This guide is not medical advice and no watch replaces a cardiologist. The goal is to help you choose the right model based on your phone, ECG needs, interest in atrial fibrillation detection, desire for continuous monitoring, and charging tolerance.
Xavier — smartwatch enthusiast, testing and wearing as many models as he can get on his wrist. • Published on January 1, 2026 • Updated on July 8, 2026
Top heart-health smartwatches 2026
The three models cover the main profiles: iPhone, Android, and classic long-battery watch.
ℹAffiliate links — we may earn a commission at no extra cost to you.
Best iPhone heart pick
Apple Watch Series 10
Apple Watch Series 10 is the heart-health reference for iPhone users: ECG, irregular rhythm notifications, high/low heart rate alerts, activity tracking, sleep, and very readable Apple Health integration. It does not replace a doctor, but it makes signals easy to consult and share.
Best for iPhone users who want the most complete and simple health experience.
Strengths
- ✓Wrist ECG
- ✓Irregular rhythm alerts
- ✓Excellent Health app
- ✓Rich medical and app ecosystem
Caveat
Limited battery: measurement consistency also depends on charging discipline.
Best Android heart pick
Samsung Galaxy Watch 7
Samsung Galaxy Watch 7 is the logical Android choice, especially with a Samsung phone. It offers ECG, heart rhythm notifications, continuous heart-rate tracking, sleep tracking, body composition, and a Wear OS platform that is more open than many competitors.
Best for Samsung/Android users who want ECG, Google apps, and daily tracking.
Strengths
- ✓ECG with Samsung Health Monitor
- ✓Continuous heart tracking
- ✓Wear OS and Google apps
- ✓Strong feature/price ratio
Caveat
Some advanced health features depend on country and work best with a Samsung phone.
Check price on Amazon
Best discreet medical style
Withings ScanWatch 2
Withings ScanWatch 2 takes a different approach: classic watch styling, a small connected window, ECG, detection of signs of atrial fibrillation, heart-rate tracking, SpO2, temperature, and claimed battery life up to 30 days. It appeals to people who want health features without a full-time screen.
Best for classic wrists, discreet tracking, and very long battery life.
Strengths
- ✓ECG and AF signs
- ✓Up to 30 days of battery
- ✓Discreet analog design
- ✓Very comfortable for sleep
Caveat
Less rich in sport apps and notifications than Apple or Samsung.
ECG, AFib, and monitoring comparison
ℹAffiliate links — we may earn a commission at no extra cost to you.
Choose Apple Watch
- •You have an iPhone.
- •You want the clearest Health app.
- •Apps and alerts matter as much as ECG.
Choose Galaxy Watch
- •You use Android or Samsung.
- •You want Wear OS and Google.
- •Feature/price value is a priority.
Choose Withings
- •You want an analog watch.
- •You hate frequent charging.
- •You prioritize discreet ECG and sleep.
ECG and atrial fibrillation detection: what to understand
Wrist ECG is the feature that attracts many buyers, but its limits matter. A watch can record a simplified electrical lead, detect some signals, and encourage you to consult a clinician. It does not replace a full medical ECG or professional interpretation.
For atrial fibrillation, watches often refer to signs, irregular rhythm notifications, or alerts. That is useful for not ignoring a signal, especially with family history or palpitations. But the best watch is the one you wear consistently, with battery life and comfort that fit your routine.
- •ECG is useful for documenting a specific episode.
- •Rhythm alerts are useful as an early signal.
- •Medical consultation is needed if symptoms appear.
Continuous monitoring: Apple/Samsung or Withings?
Apple and Samsung are better if you want a complete dashboard: activity, sleep, heart rate, notifications, apps, calls, and smartphone integration. They are more powerful, but their battery life forces a charging routine that can reduce night tracking if you forget.
Withings prioritizes discretion. ScanWatch 2 looks more like a real watch and can stay on the wrist much longer. It is less spectacular for apps, but very coherent for someone who wants heart tracking without wearing a mini-smartphone.
- •Apple: best iPhone choice and very readable data.
- •Samsung: best Android choice with Wear OS.
- •Withings: best battery life and classic style.
Verdict: Apple for iPhone, Samsung for Android, Withings for battery
Choose Apple Watch Series 10 if you have an iPhone. Choose Galaxy Watch 7 if you are on Android/Samsung. Choose Withings ScanWatch 2 if you want ECG, discretion, and long battery life before apps.
Galaxy Watch 7 price
Heart-health smartwatch 2026 FAQ
Which smartwatch has the best ECG in 2026?
For iPhone, Apple Watch Series 10 is the most complete choice. For Android, Galaxy Watch 7 is more logical. For classic style and long battery life, Withings ScanWatch 2 is highly relevant.
Can a smartwatch detect atrial fibrillation?
Some watches can flag irregular rhythms or signs compatible with atrial fibrillation, but they do not provide a definitive medical diagnosis. If in doubt, consult a healthcare professional.
Is continuous heart monitoring useful?
Yes for spotting trends: resting heart rate, recovery, effort zones, sleep, and unusual alerts. These data should be interpreted as indicators, not as a clinical exam.
Which heart-health smartwatch has the best battery life?
Withings ScanWatch 2 wins clearly with claimed battery life up to 30 days. Apple and Samsung offer more apps, but require much more frequent charging.