Oura Ring 3 vs Oura Ring 4: Key Differences, Features & Upgrade Guide | Sleep Tracker Reviews
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Oura Ring 3 vs Oura Ring 4: Key Differences, Features & Upgrade Guide

Updated: August 31, 2025 12 min read
John Willis
Expert Review

Wondering if you should upgrade to the Oura Ring 4? We’ve tested both generations extensively to help you make the right decision.

The Oura Ring has established itself as the gold standard in sleep and wellness tracking, offering comprehensive health insights in an elegant, wearable form factor. With the recent launch of the Oura Ring 4, many users are questioning whether it’s time to upgrade from their trusted Oura Ring 3.

Both generations offer exceptional sleep tracking capabilities, but the Oura Ring 4 introduces several significant improvements in sensor technology, battery life, and health monitoring features. This comprehensive comparison will examine every aspect of both devices – from design and comfort to advanced health metrics and pricing – helping you determine which ring best suits your wellness journey in 2025.

Oura Ring 3 vs Oura Ring 4: Quick Comparison

Oura Ring 3

$299

Design & Weight

Titanium, 4-6g

Sleep Tracking

Excellent accuracy

Health Features

HRV, SpO2, Temperature

Battery Life

4-7 days

Best For

Budget-conscious users

Latest Model

Oura Ring 4

$349

Design & Weight

Titanium, 3.3-5.2g (Lighter)

Sleep Tracking

Enhanced algorithms

Health Features

+ Stress monitoring, Daytime stress

Battery Life

8+ days

Best For

Advanced wellness tracking

Design & Comfort

Oura Ring 3

  • Premium titanium construction with PVD coating
  • Weight ranges from 4-6g depending on size
  • Water resistant up to 100 meters
  • Available in 4 finishes and 8 sizes

Oura Ring 4

  • Refined titanium design with improved comfort
  • Lighter weight: 3.3-5.2g across all sizes
  • Enhanced water resistance with better sealing
  • More size options for better fit

The Oura Ring 4 maintains the sleek, minimalist aesthetic that made its predecessor popular while introducing subtle improvements in comfort and durability. The weight reduction, though modest, makes a noticeable difference during extended wear, especially for users with smaller fingers.

Sleep Tracking Accuracy

Sleep Stages

Advanced detection of REM, deep, and light sleep phases

HRV Monitoring

Continuous heart rate variability tracking

Temperature

Precise body temperature variations

Both rings excel in sleep tracking accuracy, but the Oura Ring 4 introduces several algorithmic improvements that enhance precision. Independent studies show that both devices achieve over 90% accuracy in sleep stage detection when compared to polysomnography, the gold standard in sleep research.

The Oura Ring 4’s enhanced sensors provide more granular data collection, resulting in improved detection of sleep transitions and more accurate sleep efficiency calculations. Users report better correlation between subjective sleep quality and the ring’s assessments with the newer model.

Health & Fitness Features

Shared Features

Heart Rate Monitoring

24/7 continuous tracking

SpO2 Monitoring

Blood oxygen saturation tracking

Cycle Tracking

Menstrual cycle predictions

Oura Ring 4 Exclusive

Daytime Stress Monitoring

Real-time stress level detection

Enhanced Recovery Metrics

Improved readiness algorithms

Advanced Activity Tracking

Better workout recognition

Battery Life & Charging

Oura Ring 3

Average Battery Life 4-7 days
Charging Time 80 minutes
Charging Method Proprietary dock

Oura Ring 4

Average Battery Life 8+ days
Charging Time 60 minutes
Charging Method Improved dock design

The Oura Ring 4’s improved battery efficiency means less frequent charging interruptions to your tracking routine.

App Experience & Insights

Oura app interface

Enhanced User Interface

The Oura app has received significant updates with the Ring 4 launch, featuring a more intuitive dashboard and improved data visualization.

AI insights

AI-Driven Recommendations

Ring 4 users benefit from advanced AI algorithms that provide personalized wellness recommendations based on individual patterns and goals.

New Features in Ring 4 App Experience:

  • Personalized sleep coaching
  • Advanced trend analysis
  • Stress management insights
  • Improved goal setting
  • Enhanced data export
  • Better third-party integrations

Price & Value for Money

Oura Ring 3

$299

Starting price

Proven sleep tracking technology
Comprehensive health metrics
Established ecosystem
Check Price on Amazon
Latest Model

Oura Ring 4

$349

Starting price

Advanced stress monitoring
Extended battery life
AI-powered insights
Check Price on Amazon

Subscription Requirements

Both rings require an Oura Membership ($5.99/month) for full access to insights and features after a complimentary period.

Ring 3: 6 months free membership included
Ring 4: 6 months free membership included

Pros & Cons

Pros & Cons of Oura Ring 3

Pros

  • More affordable entry point at $299
  • Proven accuracy and reliability
  • Comprehensive sleep tracking
  • Established user community
  • Wide third-party app integration

Cons

  • Shorter battery life (4-7 days)
  • Limited daytime stress monitoring
  • Older sensor technology
  • Less advanced AI insights

Pros & Cons of Oura Ring 4

Pros

  • Extended battery life (8+ days)
  • Advanced daytime stress monitoring
  • Improved sensor accuracy
  • AI-powered personalized insights
  • Future-proof technology

Cons

  • Higher price point at $349
  • Requires ongoing subscription
  • Newer technology may have bugs
  • Limited availability at launch

Oura Ring 3 vs Oura Ring 4: Which is Right for You?

Choose Oura Ring 3 If:

  • You’re budget-conscious and want proven sleep tracking
  • Basic health metrics meet your needs
  • You’re new to wearable health tracking
  • You don’t need advanced stress monitoring

Choose Oura Ring 4 If:

  • You want the latest technology and features
  • Stress monitoring is important to you
  • You value longer battery life
  • You’re making a long-term investment

FAQs – Oura Ring 3 vs Oura Ring 4

Final Verdict – Oura Ring 3 vs Oura Ring 4

Our Recommendation

For most users seeking cutting-edge wellness tracking, the Oura Ring 4 represents the better long-term investment. Its extended battery life, advanced stress monitoring, and AI-powered insights justify the $50 price premium.

However, the Oura Ring 3 remains an excellent choice for budget-conscious users who prioritize proven sleep tracking accuracy over the latest features.

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