10 Best Atrial Fibrillation Monitors 2026 in the United States

The Fitbit Sense 2 is a versatile health smartwatch that includes an ECG app designed to monitor atrial fibrillation, making it a useful tool for those needing regular heart rhythm checks. Fitbit's ECG and irregular heart rhythm notifications provide reliable insights, serving as a convenient screening tool rather than a full medical device replacement. Its ease of use is highlighted by a clear, bright 1.58-inch square screen, intuitive controls, customizable clock faces, and on-wrist Bluetooth calls and notifications.

Connectivity features include Bluetooth and built-in GPS, allowing seamless syncing with your smartphone for real-time data updates and location tracking during workouts. Battery life is impressive, offering over six days on a single charge, which supports continuous heart and activity monitoring without frequent recharging. The slim, lightweight design and included small and large bands ensure comfortable all-day wear, essential for consistent health tracking. Additionally, 4GB of data storage supports storing health data and activity history locally for offline access and detailed trend analysis.

Additional health-focused features include stress detection, sleep tracking with personalized profiles, SpO2 monitoring, and mindfulness content. A 6-month Fitbit Premium membership is included, providing deeper insights and advanced analytics. However, some advanced functions like Google Maps are initially limited to Android users, potentially affecting iPhone owners until updates are available. While the Sense 2 offers many health features, individuals seeking only atrial fibrillation monitoring might prefer a dedicated medical device. The Fitbit Sense 2 is well-suited for those wanting a comprehensive health and fitness companion with solid atrial fibrillation monitoring, especially if they value ease of use, long battery life, and additional wellness features.

The KardiaMobile RED 1-Lead Personal EKG Monitor is a compact and convenient device designed to help you track your heart rhythm and detect atrial fibrillation (AFib) from the comfort of your home. It provides medical-grade single-lead EKG readings in just 30 seconds, delivering instant results on your smartphone. This device is highly portable—small enough to fit in your pocket—and easy to use, requiring you only to place your fingers on the sensors.

It connects smoothly with most smartphones and tablets through the Kardia app, allowing you to store your EKG history on your phone or email the reports to your doctor without any subscription required. Users appreciate the device's accuracy for detecting AFib, bradycardia, and tachycardia, supported by FDA clearance and professional trust. Battery life is decent with a built-in rechargeable lithium-ion battery, so you don’t have to worry about frequent replacements.

KardiaMobile only records a single-lead EKG, which is less detailed than multi-lead hospital equipment, and it doesn’t detect heart attacks or work well with pacemakers or implanted cardiac devices. Some advanced features require a paid KardiaCare subscription, which is optional. If you want a user-friendly, portable heart monitor focused on AFib detection with reliable accuracy and easy sharing options, this device is a strong choice, especially for individuals who want to monitor their heart rhythm regularly without complicated setups.

The Withings ScanWatch 2 is a hybrid smartwatch designed to track heart health with a focus on atrial fibrillation detection through its medical-grade ECG feature. It offers good accuracy with 30-second ECG recordings and continuous heart rate monitoring, which can alert users to irregular heart rhythms like AFib. The watch is easy to use, combining traditional analog hands with a small digital screen to display health data clearly. It connects smoothly to both Android and iOS devices via Bluetooth, allowing you to review detailed health insights in the Withings app. Battery life is excellent, lasting up to 35 days on a single charge, so you won’t need to recharge frequently.

Portability is strong thanks to its lightweight, durable stainless steel and sapphire glass build, making it comfortable for daily wear and water-resistant for various activities. While the watch has limited on-device memory, it stores enough data for syncing with your phone app, which keeps a more extensive history. Additional features like sleep and workout tracking, SpO2 measurement, and body temperature sensor enhance its health monitoring capabilities beyond just heart rhythm.

This smartwatch is well suited for users looking for a stylish, long-lasting device that provides reliable AFib detection alongside broader health monitoring in a simple, wearable form. The small screen size means most data review will be done on a smartphone, emphasizing the companion app experience.