10 Best Fitness Tracker Smart Watches 2025 in the United States

The Apple Watch Series 10 (GPS, 46mm) is a strong choice if you're looking for a fitness tracker smartwatch that blends health insights with smart features. It offers precise heart rate monitoring, including ECG capabilities and alerts for unusual heart rhythms, which is excellent for people who want detailed heart health data. The built-in GPS is reliable for tracking outdoor activities like running, cycling, and swimming, and it includes extra sensors for water temperature and depth, making it suitable for swimming and other aquatic workouts.

Battery life is decent for everyday use, lasting about 18 hours, which means you’ll likely need to charge it daily, but the fast charging feature is helpful if you’re in a hurry. Its water resistance up to 50 meters and dust resistance make it durable for active lifestyles. The always-on Retina display is bright and large, providing clear visibility even outdoors, which many users will appreciate. Sleep tracking includes detection of sleep stages and signs of sleep apnea, offering useful wellness data beyond basic activity tracking. Compatibility is limited to iPhone XS or newer with iOS 18+, so it won’t work with Android devices or older iPhones, which is important to consider if you don’t use Apple products.

The watch also stands out with safety features like fall and crash detection, making it not just a fitness tracker but a helpful companion for emergencies. The 18-hour battery life means it’s not the best option if you want multi-day use without charging. Additionally, this model is on the pricier side, which might not fit all budgets, and it is designed primarily for Apple users, so compatibility with other phones is very limited. If you have an iPhone and want a comprehensive device that tracks your fitness accurately while offering advanced health and safety features, the Apple Watch Series 10 is a compelling pick. Its high-quality display, robust activity tracking, and smart connectivity features make it more than just a fitness tracker—it’s a versatile smartwatch for an active lifestyle.

The Apple Watch Series 10 stands out with its larger display and sleek design, making it comfortable to wear. It excels in heart rate monitoring with ECG capabilities and offers detailed sleep tracking, including alerts for sleep apnea. The built-in GPS is reliable for tracking your outdoor activities, and the water resistance up to 50 meters makes it suitable for swimming and other water sports. Additionally, the always-on Retina display ensures you can easily view your stats at any time, even in bright sunlight.

The 18-hour battery life may require frequent charging if used extensively throughout the day, though quick charging can provide 80% in just 30 minutes. Compatibility is limited to users with iPhones, which may be a drawback for those with other smartphone brands. The cellular connectivity feature adds convenience by allowing calls and texts without needing your phone nearby, but requires a cellular service plan.

The watch offers a premium fitness tracking experience and robust safety features like fall detection, its higher price point and dependence on the Apple ecosystem may not appeal to all users. The customization options for bands and watch faces add a personal touch, and the device’s durability, including dust resistance and crack-resistant glass, ensures it can withstand various activities. The watch is also environmentally conscious, being carbon neutral when paired with select bands.

The Apple Watch Ultra 3 is designed for serious athletes and outdoor adventurers who want a durable, feature-packed smartwatch. It offers precise heart rate monitoring and advanced GPS that work well for activities like running, swimming, cycling, and hiking. Its rugged titanium case and sapphire crystal display ensure it can handle tough environments, with water resistance up to 100 meters, making it suitable for swimming and diving.

The bright, always-on display is easy to read even in bright sunlight or at wider angles, and the customizable action button adds convenience during workouts. Battery life is impressive, lasting up to 42 hours on a full charge and up to 72 hours in a low power mode, which is great for longer adventures without frequent charging. The watch also tracks sleep, blood oxygen levels, and can alert you to health issues like irregular heart rhythms or hypertension, providing valuable wellness insights. Safety features include fall detection, crash detection, and even satellite communication to call for help when out of cell range.

Its large 49mm size might be bulky or heavy for some users, and it’s best suited for those already using an iPhone, as compatibility is limited to recent Apple phones. Priced on the higher end, the Apple Watch Ultra 3 makes a strong choice for those seeking a robust, multi-sport fitness tracker with top-notch health and safety features built into a stylish, rugged package.