Reader Supported: When you buy through links on our site, we may earn an affiliate commission at no extra cost to you.
Oura Ring 4 vs YULUCKGO Smart Ring Sleep Monitor 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 YULUCKGO Smart Ring Sleep Monitor Fitness Tracker
โก Quick-Decision Verdict: Oura Ring 4 vs YULUCKGO Smart Ring Sleep Monitor Fitness Tracker
Spec-based comparison of Oura Ring 4 and YULUCKGO Smart Ring Sleep Monitor 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.
- โYULUCKGO Smart Ring Sleep Monitor 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
Combines multiple health metrics in a stylish ring format.
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
YULUCKGO Smart Ring Sleep Monitor 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 MaxYULUCKGO Smart Ring Sleep Monitor 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 | YULUCKGO Smart Ring Sleep Monitor Fitness Tracker |
|---|---|---|
| Optical PPG LED Array | Red, Infrared, Green | Red, Green |
| Skin Temperature Sensor | Listed | Check Specs |
| Sleep Metrics Listed | Sleep Duration, Sleep Stages, HRV, SpO2 | Sleep Duration |
| Water Resistance Depth | 100m/328ft | 5ATM |
| 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
โผ
View Full Technical Specs +
Isolated spec differences and direct hardware deltas
| Feature Delta | Oura Ring 4 | YULUCKGO Smart Ring Sleep Monitor 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 | 5ATM |
| Charging Case Included | โ No | โ Yes |
Shared Standards (6 Identical Specifications)↓
How the Oura Ring 4 and YULUCKGO Smart Ring Sleep Monitor Fitness Tracker Compare
The head-to-head matchup between the Oura Ring 4 and the YULUCKGO Smart Ring Sleep Monitor 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 YULUCKGO Smart Ring Sleep Monitor Fitness Tracker is constructed from Metal (2.8mm thick, 3g). Both offer robust environmental sealing (100m/328ft vs 5ATM water resistance).
On the software front, the YULUCKGO Smart Ring Sleep Monitor 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 YULUCKGO Smart Ring Sleep Monitor Fitness Tracker is rated for up to 7 days on a single charge (requiring 60 minutes via Charging Case).
Structured Technical Comparison Matrix
| Spec | Oura Ring 4 | YULUCKGO Smart Ring Sleep Monitor 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. | Metal |
| Charging Method | N/A | Charging Case |
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.
Was this side-by-side comparison accurate and helpful?
Your feedback helps us keep our specification comparisons accurate and up to date.
Alternative Smart Ring Matchups
Frequently Asked Questions
Is Oura Ring 4 better than YULUCKGO Smart Ring Sleep Monitor Fitness Tracker?
The choice between Oura Ring 4 and YULUCKGO Smart Ring Sleep Monitor Fitness Tracker depends on your priorities. Oura Ring 4 weighs 3g and costs $349 MSRP with a monthly subscription of $5.99. YULUCKGO Smart Ring Sleep Monitor 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 YULUCKGO Smart Ring Sleep Monitor Fitness Tracker?
Oura Ring 4 offers up to 8 days of battery life, whereas the YULUCKGO Smart Ring Sleep Monitor Fitness Tracker provides up to 7 days of battery endurance.