10 Best Activity Tracker Ring 2025 in the United States

The Oura Ring 4 is a sleek and modern activity tracker designed in a ring shape that appeals to unisex adults. One of its standout features is the extended battery life, lasting up to 8 days, which is excellent for users who prefer not to charge their devices frequently. The ring includes comprehensive activity tracking capabilities, such as heart rate monitoring and sleep tracking, making it a versatile tool for fitness enthusiasts and those looking to improve their sleep quality.

Additionally, its water resistance feature ensures it can withstand daily activities, including washing hands or showering. The Oura Ring 4 is also compatible with Bluetooth, making it easy to sync with other devices for enhanced functionality. However, one notable drawback is the lack of GPS, which might be a limitation for those who rely on precise location tracking during their workouts. The ring's modern design and silver color make it a fashionable accessory, and the sizing kit helps ensure a proper fit.

The package includes the ring, charger, USB cable, information booklet, and quick start guide, providing everything needed to get started. The Oura Ring 4 is a strong contender for anyone seeking a stylish and functional activity tracker, particularly those who prioritize sleep and heart rate monitoring over GPS capabilities.

The femometer Smart Ring Gen2 is a lightweight and slim activity tracker designed especially with women's health in mind. It features continuous heart rate and heart rate variability monitoring, paired with detailed sleep analysis covering deep, light, and REM stages. Its advanced basal body temperature (BBT) technology is a strong feature for cycle and fertility tracking, making it particularly useful for women looking to monitor their reproductive health.

Comfort and durability are well addressed with a premium ceramic and aluminum build, certified waterproof up to 100 meters, allowing for day and night wear without worry. The ring offers compatibility with both iOS and Android devices through Bluetooth and comes with a free lifetime subscription to the femometer app, which helps in syncing and analyzing your data seamlessly. Battery life is impressive, offering up to 35 days when paired with its charging case, providing extended usage between charges.

The ring does not have GPS functionality, so it may not suit those needing location-based activity tracking. It has an elegant and discreet design, weighing just over 3 grams, making it comfortable for 24/7 wear. It also comes with a sizing kit to ensure a good fit before purchase, which is thoughtful since fit is crucial for rings. This ring is a solid choice for those focusing on health monitoring, sleep insights, and fertility tracking rather than detailed sports tracking or navigation.

The aaboRing Smart Ring is designed for both men and women looking for a lightweight yet durable activity tracker that fits comfortably on the finger. Made from titanium, it combines strength with a sleek black finish, making it stylish for everyday wear. It excels in comprehensive tracking, offering detailed sleep analysis including REM, light, and deep sleep stages, along with a sleep score that considers oxygen levels and heart rate. Its standout feature is the Readiness Score, which monitors stress and recovery through metrics like heart rate variability and finger temperature, giving a broader picture of your wellness beyond typical step counting.

The ring tracks a wide variety of activities with 32 modes, including workouts, HIIT, and sports, although it lacks built-in GPS, so outdoor route mapping isn’t available. Heart rate monitoring and calorie tracking are included and work reliably even underwater, thanks to its IP68 waterproof rating, allowing use during swimming or bathing without worry. The battery life is strong, lasting between 4 to 7 days on a single charge with convenient wireless charging that takes just over an hour.

It connects via Bluetooth to the dedicated aaboRing app, which provides personalized insights and timely reminders about hydration, sleep, and nutrition. The ring's weight—7.1 ounces—may feel bulky compared to other smart rings. The absence of GPS means it’s less suited if mapping runs or rides is important to you. The app requires Bluetooth connectivity but no subscription fees, keeping ongoing costs low. This makes the aaboRing a solid choice for users wanting a water-resistant, multi-feature smart ring focused on detailed health metrics like sleep and stress, combined with long battery life and a comfortable titanium build, especially for those interested in holistic health tracking rather than GPS-based exercise routes.