top-pick Oura Ring 4
Smart Rings

Oura Ring 4

The bottom line: Prices are stable. Optional subscription ($5.99/mo) unlocks extra features, bringing first-year cost to $71.

The Oura Ring 4 is a premium health tracking smart ring with industry-leading sleep analysis, heart rate monitoring, blood oxygen sensing, and temperature tracking. It features a completely flat inner design for all-day comfort and up to 7 days of battery life.

$1.00 -100% vs last week
All-time low: $349.00Last tracked price ยท Verify on Amazon
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Released: October 2024Subscription: Optional: $5.99/moPlatform: iOS 16.0+, Android 10.0+

Pros & cons

What we like

  • Best-in-class sleep tracking accuracy
  • Comfortable flat-sensor design, wearable 24/7
  • Up to 7 days battery life
  • Comprehensive health metrics (HR, HRV, SpO2, temperature)
  • Daytime stress and recovery tracking

What could be better

  • Optional subscription ($5.99/mo) needed for full features
  • No real-time workout display โ€” app-dependent
  • Premium price compared to competitors

Key features

Advanced sleep staging with sleep score and insights
24/7 heart rate and HRV monitoring
Blood oxygen (SpO2) sensing during sleep
Body temperature deviation tracking
Daytime stress monitoring with Resilience score
Automatic activity detection for 40+ exercises

Who is this for?

Best for

Health-conscious individuals who want 24/7 passive tracking with a focus on sleep quality and recovery, without wearing a bulky watch.

Not ideal for

People who want real-time workout metrics on their wrist, or those who don't want any subscription fees for full features.

How it scores

Top performance
90
Best build quality
85
Most compatible
85
Easiest to use
80
Everyday essentials
75
Best value
60

Review scores

Tom's Guide 5/5 Read Review
TechRadar 4.5/5 (Device of the Year 2025) Read Review
Wareable 9/10 Read Review

Total cost of ownership

Device Price $1.00
Subscription (Optional) $5.99/mo
Annual Plan $69.99/yr
1-Year Total Cost $70.99
2-Year Total Cost $140.98
Free tier includes: Daily scores, Basic health metrics, Activity tracking

Price history (estimated)

Specifications

Battery Life Up to 7 days
Sensors Heart rate, SpO2, temperature
Water Resistance 100m
Connectivity Bluetooth 5.3
Weight 4-6g depending on size

Compatibility

iOS Supported (16.0+)
Android Supported (10.0+)
Companion App Oura App

Bluetooth 4.0 required. Works with Apple Health and Google Health Connect.

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