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Cudis Smart Ring vs Samsung Galaxy Ring
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: Cudis Smart Ring vs Samsung Galaxy Ring
โก Quick-Decision Verdict: Cudis Smart Ring vs Samsung Galaxy Ring
Spec-based comparison of Cudis Smart Ring and Samsung Galaxy Ring using manufacturer data: subscription cost, battery life, weight, sizing and sensors. WearableTier does not test devices hands-on.
๐ Key Takeaways:
- โCudis Smart Ring features $0/mo zero-subscription model with 10-day battery life.
- โSamsung Galaxy Ring 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.
AI-powered insights without subscription fees for comprehensive health monitoring.
Advanced health tracking with AI integration on your finger.
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.

Cudis Smart Ring
Check Price on Amazonโก No monthly subscription fee listed

Samsung Galaxy Ring
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.
Cudis Smart Ring
Rated Spec: 10 Days MaxSamsung Galaxy Ring
Rated Spec: 7 Days MaxSensor & Hardware Spec Comparison
Published manufacturer specifications for optical sensors, water resistance, thickness and fees
| Hardware Sensor Metric | Cudis Smart Ring | Samsung Galaxy Ring |
|---|---|---|
| Optical PPG LED Array | Red, Green, Infrared | Red, Green, Infrared |
| Skin Temperature Sensor | Check Specs | Listed |
| Sleep Metrics Listed | Sleep Stages, Sleep Quality, Sleep Duration | Sleep Stages, HRV, SpO2, Sleep Duration |
| Water Resistance Depth | 5ATM | 10ATM, IP68 |
| Chassis Thickness | 3mm | 3mm |
| Monthly Software Fee | No Monthly Fees | 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 | Cudis Smart Ring | Samsung Galaxy Ring |
|---|---|---|
| MSRP | $349 | $399 |
| Battery Life | 10 Days | 7 Days |
| Water Resistance | 5ATM | 10ATM, IP68 |
| Charging Case Included | โ No | โ Yes |
| Cycle Prediction Support | โ No | โ Yes |
| Google Connect Link | โ No | โ Yes |
Shared Standards (7 Identical Specifications)↓
How the Cudis Smart Ring and Samsung Galaxy Ring Compare
The head-to-head matchup between the Cudis Smart Ring and the Samsung Galaxy Ring represents two distinct engineering philosophies. The Cudis Smart Ring features a Titanium (3mm thick, 3g), while the Samsung Galaxy Ring is constructed from Titanium (3mm thick, 3g). Both offer robust environmental sealing (5ATM vs 10ATM, IP68 water resistance).
Per manufacturer battery specifications, the Cudis Smart Ring is rated for up to 10 days (with a 60-minute recharge via Magnetic Charging), while the Samsung Galaxy Ring is rated for up to 7 days on a single charge (requiring 60 minutes via Charging Cradle).
Structured Technical Comparison Matrix
| Spec | Cudis Smart Ring | Samsung Galaxy Ring |
|---|---|---|
| Battery Life | Up to 10 Days | Up to 7 Days |
| MSRP & Price Tier | $349 ($$$ Tier) | $399 ($$$ Tier) |
| Weight | 3g | 3g |
| Outer Shell Material | Titanium | Titanium |
| Charging Method | Magnetic Charging | Charging Cradle |
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 Cudis Smart Ring better than Samsung Galaxy Ring?
The choice between Cudis Smart Ring and Samsung Galaxy Ring depends on your priorities. Cudis Smart Ring weighs 3g and costs $349 MSRP with a monthly subscription of $0.00. Samsung Galaxy Ring weighs 3g and costs $399 MSRP with a monthly subscription of $0.00.
How does the battery life compare between Cudis Smart Ring and Samsung Galaxy Ring?
Cudis Smart Ring offers up to 10 days of battery life, whereas the Samsung Galaxy Ring provides up to 7 days of battery endurance.