Best smart ring 2024: compact, lightweight health-tracking wearables

The best smart rings to track sleep and other activities throughout the day

Best smart ring 2024: Quick links

Titanium Oura Ring on ice

(Image credit: Oura)

01. Best overall: Oura Ring Generation 3
02. Best for sleep tracking: Ultrahuman Ring Air
03. Best affordable: RingConn Smart Ring
04. Best battery life: Circular Ring

The best smart rings are gaining popularity thanks to their compact and lightweight design, making it much easier to wear them continuously than wrist wearables. Thanks to sensor and battery technology advancements in recent years, you can now access features previously only available in larger devices using a smart ring.

Smart rings have several benefits over the best smartwatches. First and foremost, they are more compact and feel less cumbersome to wear, enabling you to wear them 24/7, which is how you should wear all your wearables so that they can collect health data all day long, providing better estimations.

Secondly, they circumvent the problem many have with wrist wearables by not looking like smart devices. Smart rings weigh grams and have no displays or buttons, which is perfect for those who can't stand the design of health wearables such as running watches.

Finally, smart rings are comfortable to wear overnight – a significant issue people have with wrist-based sleep trackers. By not wanting to take them off, these clever gadgets can help analyse your slumber in incognito, as well as suggest ways to improve it via the apps and AI coaching they offer.

Without further ado, please find below the selection of the best smart rings, tested, reviewed, and ranked by T3's wearable experts. Expect to see more models added to the guide in the coming month, with companies like Apple and Samsung working on their own take on the concept.

Best smart rings to buy today

Why you can trust T3 Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out more about how we test.

Best overall

Oura Ring Generation 3 worn by woman with red hair

(Image credit: Oura)

1. Oura Ring Gen 3

Best smart ring overall

Specifications

Weight: 4-6 grams
Thickness: 2.55 mm
Available sizes: 6-13
Battery life: up to 7 days
Water rating: Water resistant up to 100m/328 ft

Reasons to buy

+
Accurate sensors
+
Dainty but durable design
+
Good health insights via the Oura app

Reasons to avoid

-
Subscrition fee is extra
-
Could offer more robust workout support

Much like how most people associate Fitbit with fitness trackers and Garmin with running watches, Oura has become synonymous with smart rings over the last few years. The latest Oura Ring is already the third generation of this nimble wearable, with an even newer version rumoured to launch very soon.

The Oura Ring – or, more like, the algorithm – takes a while to calibrate, but once it's up and running, it provides valuable health insights and accurate sleep-tracking capabilities. Fitness support isn't quite as fleshed out, but thanks to the continuous updates, it's likely we'll see some improvements in this area in the near future.

The Oura app is polished and easy to understand. In fact, it's one of the most handsome fitness apps we used in a while. Oura offers a membership for a small fee ($5.99/month), which adds in-depth sleep analysis, personalized health insights, workout heart rate tracking, and more.

If you need the best smart ring experience, you need the Oura Ring. Simple as that.

Best for sleep tracking

Ultrahuman Ring Air review

(Image credit: Matt Kollat/T3§)
Best smart ring for sleep tracking

Specifications

Weight: 2.4 - 3.6 grams
Thickness: 2.45 - 2.8 mm
Available sizes: 5-14
Battery life: up to 6 days
Water rating: Water resistant up to 100m/328 ft

Reasons to buy

+
Offers a convenient way to track your health
+
Lightweight and comfortable to wear
+
Tons of recommendations and trends via the Ultrahuman app
+
One-off cost (no subscription fee)
+
Fitness and mindfulness workouts available in the app

Reasons to avoid

-
Outer paint can get damaged easily
-
Fitness tracking could be more fleshed out

The Ultrahuman Ring Air is a unique fitness wearable concept, not just because of its lightweight, compact design. Through the accompanying app, this smart ring can help you optimise your life to improve your health and general well-being, as long as you are happy to adhere to the algorithm's recommendations.

Thanks to the unique metrics and suggestions, the Ultrahuman Ring Air is the best smart ring for sleep tracking. Not only does it monitor your circadian rhythm, but it also suggests a daily window in which you should consume all your stimulants (e.g. tea, coffee) so as not to disturb your sleep.

If you're more interested in keeping a keen eye on your sleep trend and gradual health improvements, you should check out the Ultrahuman Ring Air. Sure, there is an initial cost to buy the ring, but thanks to the lack of subscription fees, you can access any and all future software upgrades – for free.

Read our full Ultrahuman Ring Air review.

Best affordable

Ringconn Smart Ring review

(Image credit: Matt Kollat/T3)
Best affordable smart ring

Specifications

Weight: 3-5 grams
Thickness: 2.6mm
Available sizes: 6-14
Battery life: 7 days (150 days on-the-go use with the portable charging case)
Water rating: IP68 rated water resistant up to 50m/165ft

Reasons to buy

+
Long battery life (plus cable-free charging case)
+
Good sleep and stress insights
+
Ringconn app provides an easy-to-understand overview of your key stats
+
Ring connects to smartphone quickly

Reasons to avoid

-
Doesn't automatically recognise exercise
-
Health Timeline feature could provide more information
-
LEDs are almost bright enough to be used as flashlights

It's probably not fair to call Ringconn a new player in the smart ring market, where most companies are only a few years old. The company's smart ring, aptly called Ringconn Smart Ring, is one of the most affordable models and offers basic health metrics coupled with an easy-to-understand app.

The Ringconn Smart Ring connects to smartphones easily and better still, it collects data and provides insights and suggestions as soon as you start wearing it. For comparison, Oura's wearable requires around four weeks of use before it starts suggesting anything.

On the flip side, Ringconn's wearable provides less personalised suggestions on how to improve your health and fitness, similar to some fitness trackers that use general assumptions based on your age, weight, sex, etc., to offer guidance, as opposed to truly personalised insights.

That said, Ringconn is said to be working on adding more features to its Smart Ring, including menstrual cycle sleep apnea and blood pressure monitoring. As long as they can provide free access to this data, we can't wait to see them materialising in the near future.

Read our full RingConn Smart ring review.

Best battery life

Circular Ring Pro worn by person with darker skin holding a laptop

(Image credit: Circular)

4. Circular Ring

Best smart ring for battery life

Specifications

Weight: 4 grams
Thickness: 2.75 mm
Available sizes: 6-13
Battery life: up to 8 days
Water rating: Suitable for light water exposure like showering or washing hands

Reasons to buy

+
Long battery life
+
Decent sleep tracking capabilities
+
Interchangeable cover

Reasons to avoid

-
Not as waterproof as others
-
Physical button confusing to use

Now surpassed by the Circular Ring Slim, the original Circular Ring is slightly rough around the edges compared to now-standard smart rings. It has an interchangeable cover, which is excellent for expressing your personality and ensuring your smart ring matches the rest of your attire, but not so good when it comes to durability. As a result, the Circular Ring is less waterproof than other smart rings.

On a more positive note, the Circular Ring is a potent sleep tracker that provides helpful data and insights via its companion app. It's now out of stock – due to the imminent launch of its buttonless successor – and will soon be replaced in this guide (and on people's fingers) with the Slim version.

How to choose the best smart ring for you

Smart rings are a new phenomenon, and as such, they aren't often specialised in terms of feature sets. That said, there are a few things to bear in mind before you buy your first smart ring.

Sizing is one of these. Smart rings often come only in a few sizes, which, to be fair, usually covers the most popular finger circumferences (apart from the upcoming Amazfiot Helio Ring, which only comes in two sizes, 10 and 12). If your hand size is on the extreme end of the spectrum (either way), it's worth requesting a sizing kit.

Although most smart rings have similar features, there are minor differences. Some, like the Ultrahuman Ring Air, are better at optimising sleep, while others, such as Oura Ring, are best suited as an overall health tracker. Yet others focus on essential sleep and fitness tracking, e.g. RingConn Smart Ring.

Finally, it's worth considering the capabilities of companion apps and potential subscription fees. Oura only grants access to basic stats for free, while Ultrahuman offers a subscription-based extension of its service called Ultrahuman X. Yet others, like Amazfit, will charge you for accessing AI coaching and more.

How we test the best smart rings

There is no way around testing smart rings than wearing them continuously for weeks on end. Similar to wrist wearables, most smart rings need at least a couple of weeks to establish a baseline and provide more accurate estimations and suggestions.

Thankfully, smart rings weigh next to nothing, meaning prolonged wear doesn't irritate you. We tend to test smart rings for a month to ensure all systems are fully functional and have enough time to do all the different health and fitness activities these clever wearables can track.

For more info about testing, check out this explainer: How we test at T3.

Matt Kollat
Section Editor | Active

Matt Kollat is a journalist and content creator who works for T3.com and its magazine counterpart as an Active Editor. His areas of expertise include wearables, drones, fitness equipment, nutrition and outdoor gear. He joined T3 in 2019. His byline appears in several publications, including Techradar and Fit&Well, and more. Matt also collaborated with other content creators (e.g. Garage Gym Reviews) and judged many awards, such as the European Specialist Sports Nutrition Alliance's ESSNawards. When he isn't working out, running or cycling, you'll find him roaming the countryside and trying out new podcasting and content creation equipment.