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Oura Ring 4 vs YuYolex Smart Ring Fitness Tracker
Side-by-side comparison of manufacturer specifications: weight, size, battery life, sensors, app compatibility and subscription fees.
By Gil Sapir, Editor ยท Data compiled from manufacturer specifications and public sources (methodology).
โกโก Quick-Decision Verdict: Oura Ring 4 vs YuYolex Smart Ring Fitness Tracker
โก Quick-Decision Verdict: Oura Ring 4 vs YuYolex Smart Ring Fitness Tracker
Spec-based comparison of Oura Ring 4 and YuYolex Smart Ring Fitness Tracker using manufacturer data: subscription cost, battery life, weight, sizing and sensors. WearableTier does not test devices hands-on.
๐ Key Takeaways:
- โOura Ring 4 features $5.99/mo subscription with 8-day battery life.
- โYuYolex Smart Ring Fitness Tracker provides $0/mo zero-subscription model with 7-day battery life.
- โAlways test sizing kits for 24 hours prior to final device selection to guarantee reliable biometric signal tracking.
Smart Sensing technology that adapts to individual health metrics
Affordable smart health monitoring in a stylish ring
Comparing Budget / White-Label Amazon Smart Rings
This matchup includes white-label hardware. For an overview of budget smart rings under $100, including app subscription paywalls, see our budget ring guide.
Smart Ring Sensors & Biometric Architecture Guide
An overview of optical PPG sensors, skin temperature thermistors, and signal basics.
๐ Category Matchup Trophies
Lowest list price plus 12 months of app subscription fees (MSRP; retail prices vary).
Based on each manufacturer's published app compatibility.
Oura Ring 4
YuYolex Smart Ring Fitness Tracker
Check Price on Amazonโก No monthly subscription fee listed
Interactive Biometric Load & Battery Simulator
Manufacturer battery specifications test rings under ambient laboratory conditions. Adjust your daily wearable sensor profile below to estimate real-world endurance and charge cycle frequency.
Oura Ring 4
Rated Spec: 8 Days MaxYuYolex Smart Ring Fitness Tracker
Rated Spec: 7 Days MaxSensor & Hardware Spec Comparison
Published manufacturer specifications for optical sensors, water resistance, thickness and fees
| Hardware Sensor Metric | Oura Ring 4 | YuYolex Smart Ring Fitness Tracker |
|---|---|---|
| Optical PPG LED Array | Red, Infrared, Green | Green LED, Red LED, Infrared Sensor |
| Skin Temperature Sensor | Listed | Check Specs |
| Sleep Metrics Listed | Sleep Duration, Sleep Stages, HRV, SpO2 | Sleep Duration, Light Sleep, Deep Sleep, Awake Time |
| Water Resistance Depth | 100m/328ft | IP68 |
| Chassis Thickness | 2.88mm | 2.8mm |
| Monthly Software Fee | $5.99/mo | No Monthly Fees |
Battery life estimates apply an illustrative usage multiplier to each ring's manufacturer-rated battery life. Actual endurance varies with settings, fit, and daily activity.
View Full Technical Specs +
Isolated spec differences and direct hardware deltas
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View Full Technical Specs +
Isolated spec differences and direct hardware deltas
| Feature Delta | Oura Ring 4 | YuYolex Smart Ring Fitness Tracker |
|---|---|---|
| MSRP | $349 | $129 |
| Monthly Subscription | $5.99/mo | Zero Subscription Fees |
| Thickness | 2.88mm | 2.8mm |
| Width | 7.9mm | 8mm |
| Battery Life | 8 Days | 7 Days |
| Water Resistance | 100m/328ft | IP68 |
| Charging Case Included | โ No | โ Yes |
| Sizing Kit Available | โ Yes | โ No |
| Cycle Prediction Support | โ Yes | โ No |
| Apple Health Link | โ Yes | โ No |
| Google Connect Link | โ Yes | โ No |
Shared Standards (2 Identical Specifications)↓
How the Oura Ring 4 and YuYolex Smart Ring Fitness Tracker Compare
The head-to-head matchup between the Oura Ring 4 and the YuYolex Smart Ring Fitness Tracker represents two distinct engineering philosophies. The Oura Ring 4 features a Fully titanium design or high-performance zirconia ceramic for the Oura Ring 4 Ceramic. (2.88mm thick, 3g), while the YuYolex Smart Ring Fitness Tracker is constructed from Stainless Steel (2.8mm thick, 3g). Both offer robust environmental sealing (100m/328ft vs IP68 water resistance).
On the software front, the YuYolex Smart Ring Fitness Tracker operates under a zero-subscription model ($0/mo forever), whereas the Oura Ring 4 requires a recurring $5.99/mo membership to access historical sleep profiles, readiness trends, and advanced AI algorithms.
Per manufacturer battery specifications, the Oura Ring 4 is rated for up to 8 days (with a 20-minute recharge via N/A), while the YuYolex Smart Ring Fitness Tracker is rated for up to 7 days on a single charge (requiring 60 minutes via Magnetic Charging).
Structured Technical Comparison Matrix
| Spec | Oura Ring 4 | YuYolex Smart Ring Fitness Tracker |
|---|---|---|
| Battery Life | Up to 8 Days | Up to 7 Days |
| MSRP & Price Tier | $349 ($$$ Tier) | $129 ($$ Tier) |
| Weight | 3g | 3g |
| Outer Shell Material | Fully titanium design or high-performance zirconia ceramic for the Oura Ring 4 Ceramic. | Stainless Steel |
| Charging Method | N/A | Magnetic Charging |
Interactive Ecosystem Sync Flowchart
Select your phone OS, fitness watch, and apps. Visualize exactly how data flows from your smart ring to your ecosystem, and highlight broken links.
Sync Flow Map
Virtual Sizing Assistant
Convert your finger circumference to a standard US ring size. Smart ring brands may size differently from jewelers, so confirm with the manufacturer's sizing guide or sizing kit before buying.
Your Standard US Ring Size
Smart ring sizes vary by brand and model. Use this as a starting point and confirm your size with the manufacturer's sizing guide or sizing kit before ordering.
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Alternative Smart Ring Matchups
Frequently Asked Questions
Is Oura Ring 4 better than YuYolex Smart Ring Fitness Tracker?
The choice between Oura Ring 4 and YuYolex Smart Ring Fitness Tracker depends on your priorities. Oura Ring 4 weighs 3g and costs $349 MSRP with a monthly subscription of $5.99. YuYolex Smart Ring Fitness Tracker weighs 3g and costs $129 MSRP with a monthly subscription of $0.00.
How does the battery life compare between Oura Ring 4 and YuYolex Smart Ring Fitness Tracker?
Oura Ring 4 offers up to 8 days of battery life, whereas the YuYolex Smart Ring Fitness Tracker provides up to 7 days of battery endurance.