This comprehensive guide compares the top smart rings of 2025, including the Oura Ring 4 and Samsung Galaxy Ring. We evaluate health monitoring accuracy, battery life, and app integration to help you find the perfect alternative to a smartwatch.
In 2025, the wearable technology market has shifted dramatically. While smartwatches remain popular, a growing segment of users is ditching the bulky screens for something more discreet: the smart ring. With a projected market size reaching nearly $5 billion by the next decade, these tiny titanium loops are becoming the go-to devices for tracking sleep, recovery, and overall health productivity.
The appeal is obvious. Smart rings offer up to 10 days of battery life, they are comfortable enough to wear while sleeping, and they allow you to wear a traditional mechanical watch on your wrist without looking like you are double-wristing technology. However, the market is now crowded. The Oura Ring 4 reigns as the premium leader, but tech giants like Samsung and agile startups like RingConn are offering compelling alternatives that often skip the dreaded monthly subscription fees.
Below, we break down the best smart rings available in 2025 based on extensive research, user reviews, and technical specifications.
If budget is not your primary concern and you want the most polished software experience available, the Oura Ring 4 remains the gold standard. It is widely considered the best smart ring money can buy, backed by years of clinical validation and a sophisticated app ecosystem.
Best For: iPhone users, data nerds, and those who prioritize sleep tracking accuracy above all else.
The Oura Ring 4 tracks over 50 health metrics, including heart health, stress, and specific women's health metrics. Unlike its predecessors, it offers improved sizing options and a sleeker design. The standout feature is its ability to seamlessly integrate with over 40 apps, including Apple Health, Google Health Connect, and Strava.
However, the hardware cost is just the entry fee. To access your historical data and advanced insights, Oura requires a $5.99 monthly subscription. While some users find this frustrating, the consensus from Amazon reviews suggests the data quality makes it worthwhile. One user noted, "I've been able to make adjustments that have really changed my energy levels. It's also been very validating on days when I feel exhausted and my ring reflects this back to me."
Shop the Oura Ring 4 on Amazon
For years, Android users waited for a major manufacturer to enter the ring space, and in 2025, the Samsung Galaxy Ring is the top contender. If you already own a Samsung smartphone, this is almost certainly the ring you should buy.
Best For: Samsung Galaxy phone owners and Android users who refuse to pay subscriptions.
The Galaxy Ring features a concave design to prevent scratches and uses advanced sensors to monitor heart rate, sleep patterns, and skin temperature. The data syncs directly to the Samsung Health app, which is a robust platform in its own right. The biggest selling point against Oura is the lack of a monthly fee—once you buy the ring, the data is yours.
User reviews on Amazon are generally positive, highlighting the comfort and the seamless integration with the Galaxy ecosystem. However, potential buyers must be aware of the strict limitation: this device is currently compatible only with Android, and optimized heavily for Samsung devices.
Shop the Samsung Galaxy Ring on Amazon
The RingConn Gen 2 Air is the sleeper hit of 2025. It provides arguably the best value proposition in the market today, combining a sub-$200 price point with a battery life that outperforms both Samsung and Oura.
Best For: Budget-conscious buyers and those who hate charging their devices.
Weighing only 2.5g with a super-thin 2mm profile, the Gen 2 Air is incredibly comfortable. It tracks all the essentials: sleep, heart rate, blood oxygen, and stress levels. It manages to squeeze out an impressive 10 to 12 days of battery life on a single charge, making it the "set it and forget it" champion.
Critically, RingConn does not charge a subscription fee. You get lifetime access to your data for the upfront cost of the hardware. Reviews praise it as the perfect entry point, with one user stating, "If you want to dip your toes into the smart ring space with a no-frills, affordable option then the RingConn Gen 2 Air is the best smart ring for you."
Shop the RingConn Gen 2 Air on Amazon
If the RingConn is unavailable or you are already tied into the Zepp health ecosystem (Amazfit's parent company), the Helio Ring is another strong budget contender. Priced aggressively, often dropping below $170 during sales, it lowers the barrier to entry significantly.
Best For: Athletes on a strict budget.
The Helio Ring offers comprehensive tracking including heart rate, blood oxygen, EDA (stress), and even ECG sensors, which is rare at this price point. It integrates with the Zepp app, which is popular among runners for its detailed metrics. While the battery life is shorter than the competition at roughly four days, and sizing options are currently limited to three sizes, the value is undeniable for the right user.
Shop the Amazfit Helio Ring on Amazon
When selecting a smart ring, there are three primary factors to consider beyond the price tag.
This is the most polarizing aspect of the smart ring market. Oura operates on a subscription model ($5.99/month). Without it, the ring is severely limited. Samsung, RingConn, and Amazfit do not charge monthly fees. If you plan to keep the device for several years, a subscription-free ring could save you over $200 in the long run.
Unlike Bluetooth headphones, smart rings are often tethered to specific ecosystems. The Samsung Galaxy Ring is effectively a paperweight for iPhone users. Conversely, the Oura Ring and RingConn work beautifully on both iOS and Android. Always check compatibility before purchasing.
Because fingers swell and shrink throughout the day, getting the fit right is more difficult than with a watch strap. Most brands, including Oura and Samsung, will ship you a plastic sizing kit before they send the actual electronic ring. We highly recommend using these kits and wearing the plastic test ring for at least 24 hours to ensure a comfortable fit for sleep.
As you shop, you may notice the absence of the Ultrahuman Ring Air in US stores. Due to a patent dispute ruling by the US International Trade Commission in late 2024, Ultrahuman has halted sales in the United States. While they continue to support existing devices, new buyers in the US should focus on the four alternatives listed above.
For the absolute best health insights and app experience, the Oura Ring 4 is still the king of the hill, provided you are willing to pay the monthly toll. For Samsung users, the Galaxy Ring is a no-brainer integration. However, for the vast majority of users looking for value, long battery life, and freedom from subscriptions, the RingConn Gen 2 Air is our top recommendation for 2025.
