If you’re considering a smart ring for fitness tracking, the Oura Ring 4 and Oura Ring 5 stand out as leading options for comprehensive health monitoring. The Oura Ring 5 offers cutting-edge technology with a compact design, but comes with a subscription fee and size limitations. Meanwhile, the Oura Ring 4 provides excellent value with multiple sizes, strong compatibility, and detailed health metrics, though it lacks an onboard display. For those seeking a balance between advanced features and affordability, these two rings are prime contenders. Other models add subtle distinctions, but the core tradeoff remains: premium features versus ease of use and cost.
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Key Takeaways
- The Oura Ring 5 excels in size and advanced tracking but requires a special sizing kit and subscription.
- The Oura Ring 4 offers more size options, good compatibility, and comprehensive metrics at a slightly lower price point.
- All options require proper sizing before purchase and involve subscription fees for full features.
- Lack of onboard screens limits immediate notifications, making these rings more for wellness insights than instant alerts.
- Battery life generally ranges from 6 to 9 days, supporting continuous wear without frequent charging.
| smart ring for fitness tracking oura ring 4 | Battery Life | Size | Water Resistance | Material |
|---|---|---|---|---|
| Oura Ring 5 Smart Ring | 6-9 days | 7 | — | Titanium |
| Oura Ring 4 | Up to 8 days | 10 | 100 meters | — |
| Oura Ring 4 | Up to 8 days | — | 100 meters | — |
| Oura Ring 4 | Up to 8 days | 9 | Yes | Titanium with gold finish |
| Oura Ring 4 Smart Ring | Up to 8 days | 8 | Yes | Titanium |
More Details on Our Top Picks
Oura Ring 5 Smart Ring – Silver – Size 7 – Fitness & Sleep Tracker
The Oura Ring 5 sets itself apart through its ultra-compact design and the ability to track over 50 health metrics with high accuracy. It’s the smallest and most advanced model, ideal for those prioritizing a discreet form factor. Its titanium build ensures durability, and with a battery life of up to 9 days, it’s suitable for continuous wear. However, it requires a specialized sizing kit for a proper fit before purchase, and a subscription fee applies after the first month for full access to insights. Compared to the earlier Oura Ring 4, it offers slightly improved health sensing but at a higher cost.
Pros:- Compact and lightweight for daily comfort
- Highly accurate tracking of diverse health metrics
- Long battery life of up to 9 days
- Seamless app integration for personalized insights
Cons:- Sizing requires a special kit for proper fit
- Subscription fee after initial month
- Limited size options
Best for: Best for users who want the latest tech and a compact, lightweight design.
Not ideal for: Those who dislike subscriptions or need a wider range of sizes without extra steps.
- Material:Titanium
- Size:7
- Battery Life:6-9 days
- Connectivity:App integration with over 40 apps
- Membership:First month included, $5.99/month thereafter
Our verdict“The Oura Ring 5 is perfect for tech-savvy users seeking the smallest, most advanced fitness ring, accepting the subscription and sizing tradeoffs.”
Oura Ring 4 – Silver – Size 10 – Smart Ring for Sleep, Activity, and Women’s Health (Renewed)
The Oura Ring 4 offers a sleek, stylish design with the ability to track over 50 health metrics, including sleep, activity, stress, and women’s health. Its compatibility with both Android and iOS makes it a flexible choice for most users. The ring provides up to 8 days of battery life and is lightweight, making it comfortable for all-day wear. The need for a sizing kit before purchase can be inconvenient, and a subscription is required after the first month to unlock full features. Compared with the Ring 5, it offers more size options and is generally more affordable, though slightly less cutting-edge.
Pros:- Tracks over 50 health metrics for comprehensive insights
- Long-lasting battery with up to 8 days of use
- Compatible with both Android and iOS
- Lightweight and stylish design
Cons:- Requires sizing kit for proper fit
- No display on the ring itself
- Subscription needed for full features
Best for: Best for users wanting detailed insights without the premium price or size limitations.
Not ideal for: Those who prefer an onboard display or dislike subscriptions.
- Color:Silver
- Size:10
- Battery Life:Up to 8 days
- Water Resistance:100 meters
- Compatibility:iOS, Android
Our verdict“The Oura Ring 4 offers a balanced mix of features and affordability, suitable for most wellness-focused users willing to subscribe for full insights.”
Oura Ring 4 – Silver – Size 11 – Smart Ring for Sleep, Activity, and Women’s Health (Renewed)
This Oura Ring 4 in size 11 provides the same excellent health tracking as other models, with an emphasis on a larger fit for users with bigger fingers. It maintains the ability to monitor sleep, activity, stress, and women’s health, with the same up to 8-day battery life. While it offers broad compatibility and a sleek design, it requires a sizing kit and a subscription for full access, just like the smaller sizes. This model makes sense for those needing a larger ring and detailed wellness data.
Pros:- Good for larger fingers with size 11 option
- Comprehensive health metrics tracking
- Long battery life of up to 8 days
- Compatible with Android and iOS
Cons:- Requires proper sizing kit
- No onboard display
- Subscription needed after first month
Best for: Best for users with larger fingers or those preferring a slightly bigger fit.
Not ideal for: Individuals needing a smaller ring or avoiding subscriptions.
- Weight:5.2 g
- Dimensions:1.1 x 1.1 x 0.28 inches
- Battery Life:Up to 8 days
- Water Resistance:100 meters
- Supported Apps:Oura App
Our verdict“Ideal for larger finger users seeking in-depth health insights with dependable battery life and device compatibility.”
Oura Ring 4 – Gold – Size 9 – Smart Ring, Sleep, Activity, Women’s Health, AI Advisor, Up to 8 Days Battery, Compatible with Android & iOS
The Oura Ring 4 Gold combines elegant aesthetics with the core features of health tracking, including sleep, activity, stress, and women’s health. Its AI-driven insights and stylish finish make it appealing for users who want both form and function. It offers up to 8 days of battery life and requires a sizing kit for a perfect fit. While it provides a comprehensive health overview, it lacks onboard notifications or screens, and a subscription is necessary for full access. Its premium price reflects its design and feature set.
Pros:- Sleek, stylish gold finish
- Tracks over 50 health metrics
- Long battery life of up to 8 days
- Compatible with Android and iOS
Cons:- Requires sizing kit
- No on-ring display or vibrations
- Subscription fee for full features
Best for: Best for style-conscious users who want comprehensive wellness data with a touch of luxury.
Not ideal for: Budget-conscious buyers or those needing immediate notifications on the ring.
- Material:Titanium with gold finish
- Size:9
- Battery Life:Up to 8 days
- Water Resistance:Yes
- Compatibility:iOS, Android
Our verdict“The Oura Ring 4 Gold appeals to those seeking a premium-looking device with extensive health tracking, accepting the subscription and sizing requirements.”
Oura Ring 4 Smart Ring – Silver – Size 8
The Oura Ring 4 in size 8 offers a traditional, durable titanium build, ideal for users wanting a classic look combined with reliable health tracking. It measures sleep, activity, stress, and heart health using advanced smart sensing technology. The ring provides up to 8 days of battery life and works well with both Android and iOS platforms. However, it requires proper sizing with a kit before purchase, and after the first month, a subscription unlocks full functionality. It’s a straightforward, dependable option for everyday wellness monitoring.
Pros:- Accurate tracking with smart sensing technology
- Long-lasting battery of up to 8 days
- Durable, water-resistant titanium design
- Compatible with iOS and Android
Cons:- Requires sizing kit before purchase
- Subscription needed for full features
- No onboard display or notifications
Best for: Those seeking a durable, no-frills wellness ring with long battery life.
Not ideal for: Users who want a ring with a display or immediate notifications.
- Material:Titanium
- Size:8
- Battery Life:Up to 8 days
- Water Resistance:Yes
- Compatibility:iOS, Android
Our verdict“This size 8 Oura Ring 4 balances durability and performance, making it suitable for users who prioritize reliability and classic design.”

How We Picked
Our selection process focused on rings that offer meaningful fitness tracking capabilities, user comfort, durability, and integration with popular health apps. We prioritized models with proven sensor accuracy, long battery life, and user-friendly features, comparing their versatility and tradeoffs. Because the goal is to recommend the best options for different user needs, we also considered affordability, size variety, and subscription requirements. Only rings that have been widely reviewed and are compatible with both iOS and Android made the cut, ensuring broad accessibility.
| smart ring for fitness tracking oura ring 4 | Material |
|---|---|
| Oura Ring 5 Smart Ring | Titanium |
| Oura Ring 4 | — |
| Oura Ring 4 | — |
| Oura Ring 4 | Titanium with gold finish |
| Oura Ring 4 Smart Ring | Titanium |
Factors to Consider When Choosing Smart Ring For Fitness Tracking Oura Ring 4
Choosing the right fitness-focused smart ring involves balancing features, fit, and your specific health goals. Here’s what to consider:Fit and Comfort
Proper sizing is critical for accurate tracking. Most rings require a sizing kit, which adds a step but ensures comfort and data accuracy. Consider your finger size and preferred fit—larger sizes are available for bigger fingers, and some models come with multiple options.
Health Metrics and Features
Look for rings that track the metrics most important to you—sleep, activity, stress, heart rate, or women’s health. The Oura Ring 4 and 5 excel here, with over 50 metrics, but check if additional features like cycle tracking or AI advice matter to you.
Display and Notifications
Most rings lack onboard screens or vibrations, meaning you’ll rely on app notifications. If immediate alerts are crucial, a different device might be better. For wellness insights and long-term trends, these rings are excellent choices.
Battery Life and Durability
Battery life varies from 6 to 9 days, supporting continuous wear without frequent charging. Durability is also key—titanium models are highly resistant to daily wear and water, making them suitable for all lifestyles.
Subscription Costs
Almost all high-end smart rings require ongoing subscriptions after the first free month, which funds personalized insights and app features. Factor this into your budget, especially for long-term use.
Frequently Asked Questions
Do I need a special sizing kit for these rings?
Yes, most Oura rings require a sizing kit to ensure a proper fit. Proper sizing is essential for accurate health tracking and comfort. Many models include a free sizing kit, but it’s an important step before purchasing to avoid dissatisfaction or inaccurate data.
Can I wear these rings during workouts or swimming?
Most Oura rings are water-resistant up to 100 meters, making them suitable for swimming and sweating during workouts. However, high-impact activities or contact sports may pose a risk of damage, so consider your activity level when choosing a model.
Is a subscription necessary to use these rings effectively?
Almost all advanced fitness rings, including the Oura models, require a subscription after the initial free month to access detailed insights and personalized health data. This fee supports ongoing app development and data analysis, so factor it into the long-term cost.
How accurate are the health metrics tracked by these rings?
The sensors in these rings are designed to provide high accuracy for sleep, heart rate, activity, and stress. While they are generally reliable for wellness monitoring, they are not medical devices. For specific health concerns, consult a healthcare professional.
Are these rings compatible with all smartphones?
The Oura rings are compatible with both iOS and Android devices, making them widely accessible. Ensure your phone meets the app requirements—most recent versions of iOS and Android are supported—and that you download the latest app updates for optimal performance.
Conclusion
For users seeking the most advanced and compact design, the Oura Ring 5 makes sense, despite its higher cost and subscription. If affordability, multiple sizes, and compatibility are priorities, the Oura Ring 4 offers excellent value. Those who prefer a traditional look or durable build may favor the Oura Ring 4 in size 8. Budget-conscious buyers or those avoiding subscriptions might consider other brands, but within the Oura lineup, these options deliver dependable wellness tracking for most health-focused users.
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