The 8 Best Smart Rings in 2025: Stylish, Smart, and Surprisingly Useful

Smart rings are quietly taking over the wearable tech world. Compared to bulky smartwatches, these tiny rings are sleek, lightweight, and packed with advanced features like sleep tracking, fitness monitoring, contactless payments, and even fertility insights. Whether you’re a health enthusiast, a productivity geek, or someone who just wants less screen time, there’s a smart ring for you.

In this article, we’ve handpicked the 8 best smart rings in 2025, from the fan-favorite Oura Ring Gen 4 to the innovative Evie Ring made just for women. Let’s dive in.

Quick Summary: Our Top Picks

Smart Ring	Best For	Key Features
Oura Ring Gen 4	Overall Health Tracking	Accurate sleep & readiness score, sleek design, heart rate & SpO2 monitoring
Ultrahuman Ring Air	Athletes & Fitness Lovers	Metabolic score, HRV, low-latency tracking, strong Whoop competitor
Evie Ring	Women’s Health	Menstrual & mood tracking, FDA-cleared, comfortable fit
RingConn Smart Ring	Balanced Functionality	Long battery life, no subscription, sleep & activity tracking
Circular Ring Slim	Smart Lifestyle	Vibration alerts, Alexa integration, AI-based insights
Prevention circul+ Ring	Medical Monitoring	FDA-cleared SpO2, heart health data, remote monitoring
McLear RingPay	Contactless Payments	Pay with your finger, water-resistant, no charging needed
Noise Luna Ring	Budget Pick (India)	Affordable, sleep & fitness tracking, stylish design

How We Test Smart Rings

We’ve spent weeks wearing these smart rings during workouts, sleep, workdays, and while traveling. Here’s what we evaluate:

• Comfort & Fit: Is it lightweight and comfortable enough to wear 24/7?
• Sensors & Accuracy: Does it provide reliable data for sleep, HRV, SpO2, and more?
• Battery Life: How long does it last on a single charge?
• App Experience: Is the companion app useful, intuitive, and subscription-free?
• Unique Features: Any standout tools like vibration alerts, period tracking, or contactless payments?

1. Oura Ring Gen 4 – Best Overall Smart Ring

Why We Love It: The Oura Ring Gen 4 continues to lead the smart ring market with cutting-edge health sensors, incredibly accurate sleep data, and a beautiful design. It’s especially popular among professionals, athletes, and anyone serious about wellness.

• Key Features:
  • Sleep score, readiness score, and activity tracking
  • 24/7 heart rate, SpO2, body temperature monitoring
  • Menstrual prediction and stress tracking
  • Compatible with Apple Health & Google Fit
• Pros:
  • Elegant design (comes in silver, gold, stealth)
  • One of the most accurate sleep trackers on the market
• Cons:
  • Monthly subscription ($5.99/mo) for full features

2. Ultrahuman Ring Air – Best for Fitness

Why We Love It: If you’re focused on performance, recovery, and metabolic health, the Ultrahuman Ring Air offers powerful insights that rival Whoop and Oura, with a sleek form factor.

• Key Features:
  • Metabolic score, HRV, movement tracking
  • Continuous glucose monitoring integration (optional)
  • No monthly subscription
• Pros:
  • Made of titanium and ultra-lightweight
  • Focused insights for athletes
• Cons:
  • Currently limited integrations with third-party fitness apps

3. Evie Ring – Best Smart Ring for Women

Why We Love It: The Evie Ring is designed specifically for women, with features like menstrual cycle tracking and mood logging. It’s also FDA-cleared for health metrics.

• Key Features:
  • Tracks sleep, SpO2, activity, and mood
  • Menstrual and ovulation cycle tracking
  • Comfortable open-ring design
• Pros:
  • No subscription
  • Lightweight and breathable
• Cons:
  • Only available in silver color for now

4. RingConn Smart Ring – Best for All-Round Use

Why We Love It: RingConn strikes a great balance between health tracking and daily practicality, with a competitive price point and no subscription fee.

• Key Features:
  • Sleep stages, heart rate, SpO2, HRV
  • 7-day battery life
  • Offline mode & fast charging case
• Pros:
  • No recurring fees
  • Stylish, durable design
• Cons:
  • App insights less in-depth than Oura

5. Circular Ring Slim – Smartest Features

Why We Love It: Circular Ring Slim stands out with smart features like vibration alerts, customizable alarms, and Alexa support. It’s also one of the thinnest smart rings on the market.

• Key Features:
  • Smart vibration alerts
  • Daytime energy and sleep monitoring
  • Alexa and IFTTT integration
• Pros:
  • Replaceable outer shell for style customization
  • Slim, futuristic design
• Cons:
  • Still in early launch stages, limited availability

6. Prevention circul+ Ring – Best for Medical-Grade Tracking

Why We Love It: This one’s more like a health monitor than a lifestyle ring. Ideal for seniors or anyone managing a chronic condition.

• Key Features:
  • FDA-cleared for pulse oximetry
  • Tracks blood pressure trends, HRV, temperature
  • Syncs with telehealth platforms
• Pros:
  • Trusted by doctors and hospitals
  • Medical-level insights
• Cons:
  • Bulky design compared to others
  • Expensive

7. McLear RingPay – Best for Contactless Payments

Why We Love It: Just tap your finger to pay — no battery, no Bluetooth, no charging. It’s great for travelers or those who want a minimalist wallet-free option.

• Key Features:
  • NFC-based payment ring
  • Water-resistant and scratch-proof
  • No charging or pairing needed
• Pros:
  • Always ready to use
  • Unique concept
• Cons:
  • No health or fitness features

8. Noise Luna Ring – Best Budget Smart Ring (India)

Why We Love It: One of the most affordable smart rings available, the Luna Ring by Indian brand Noise brings solid tracking to a wider audience.

• Key Features:
  • Sleep, SpO2, heart rate, and steps tracking
  • 6-day battery life
  • Sleek design with matte finish
• Pros:
  • Inexpensive
  • Great for first-time users
• Cons:
  • Limited app features
  • Currently only available in India

Should You Buy a Smart Ring?

Smart rings won’t fully replace your smartwatch — yet. But if you’re looking for an unobtrusive way to monitor your health, improve sleep, or stay more mindful of your habits, they’re a powerful (and stylish) upgrade.

Whether you choose the feature-rich Oura Ring Gen 4, the female-focused Evie Ring, or a budget option like the Noise Luna, there’s something in 2025’s smart ring lineup for everyone.