At a glance
Smart rings track your sleep, heart rate and recovery from your finger, with no screen to distract you. They are lighter than a watch, last longer on a charge, and are comfortable to wear at night, which is where most of their value comes from.
For the bigger picture on rings, AI wearables and smart glasses, read our explainer on smart rings, AI wearables and smart glasses.
How we chose
We compared each ring’s sensors, battery life, phone support and the total cost of owning it for two years, including any subscription. We also weighed long-term owner feedback on comfort and app quality.
What to look for
- Your phone: Samsung’s ring only works with Android, and works best with a Galaxy phone. Oura, RingConn and Ultrahuman work with iPhone too.
- Subscription: a cheaper ring with a monthly fee can cost more than a pricier one without it after a year or two.
- Battery: five days or more means you only charge it about once a week.
- Size: always use the sizing kit before you buy.
Our pili
1. Oura Ring 4
Pinakamainam para sa: People who want the most polished sleep and readiness insights
The ring most others are measured against. Oura's app turns sleep, heart rate, HRV and temperature into one clear daily score, and the titanium ring is comfortable enough to forget you are wearing it.
- Battery
- Up to 8 days
- Phones
- iPhone & Android
- Subscription
- Yes, monthly
Pros
- Best-in-class app and sleep insights
- Works with both iPhone and Android
- Light, comfortable titanium design
Cons
- Most features need a paid membership
- Expensive once you add the subscription
No subscription2. Samsung Galaxy Ring
Pinakamainam para sa: Samsung Galaxy phone owners
Everything is included with no monthly fee, and on a Galaxy phone it ties into Samsung Health and Galaxy AI summaries. You can also pinch your fingers to take photos or stop alarms.
- Battery
- Up to 7 days
- Phones
- Android (best on Galaxy)
- Subscription
- None
Pros
- No monthly fee
- Charging case doubles as a power bank
- Gesture controls with Galaxy phones
Cons
- Doesn't work with iPhone
- Some features only on Samsung phones
3. RingConn Gen 2
Pinakamainam para sa: Anyone who hates charging and wants sleep apnea alerts
The longest battery life of the popular rings and no subscription. It also watches for breathing problems during sleep, which few rings at this price do.
- Battery
- Around 10 to 12 days
- Phones
- iPhone & Android
- Subscription
- None
Pros
- Excellent battery life
- No monthly fee
- Sleep apnea monitoring
Cons
- App is less polished than Oura's
- Fewer third-party integrations
4. Ultrahuman Ring Air
Pinakamainam para sa: Buyers in India who want no subscription
A very light ring from an Indian company, with strong sleep and metabolism features and no monthly fee. Availability differs by country, so check your local store.
- Battery
- Around 4 to 6 days
- Phones
- iPhone & Android
- Subscription
- None
Pros
- One of the lightest rings
- No monthly fee
- Easy to buy and service in India
Cons
- Shorter battery than RingConn
- May not be sold in every country
Mga madalas itanong
Is a smart ring better than a smartwatch?
For sleep tracking, often yes: a ring is more comfortable to wear in bed and its battery lasts longer. A watch is better if you want a screen, notifications and GPS for workouts.
Do smart rings need a subscription?
Oura needs a monthly membership for most features. Samsung Galaxy Ring, RingConn and Ultrahuman include everything with no monthly fee.
How do I choose the right ring size?
Order the free sizing kit first and wear the sample ring for a day, ideally on your index finger. Ring sizes are not always the same as jewellery sizes.