Versus Engine
Oura Ring 4 vs Whoop 4.0
Specs, price and the one trade-off that actually decides it — Oura Ring 4 against Whoop 4.0, side by side.
Cheaper to start
Whoop 4.0
Starts about $110 lower.
Rated higher
Whoop 4.0
9.2 vs 8.1 on our design scale.
Standout
Oura Ring 4
Best-in-class sleep tracking accuracy

Oura Ring 4
The all-titanium fourth-generation smart ring, from $349 plus a required membership.
Where it wins, where it doesn't
Pros
- Best-in-class sleep tracking accuracy
- Lightweight titanium build
- Excellent battery life
Cons
- Full data access requires a $5.99/month membership on top of the hardware
- Gold and ceramic finishes jump to $499
- Cannot buzz — no haptics, so it tracks rather than tells
Specifications
- sizes4 to 15
- batteryUp to 8 days
- sensors18-path multi-wavelength PPG, temperature, SpO2
- materialTitanium, inside and out
- charge_timeUp to 120 minutes
- subscriptionOura Membership, $5.99/month or $69.99/year
- tier—
- battery_life—

Whoop 4.0
The definitive screenless fitness and recovery tracker favored by elite athletes, focusing purely on physiological data.
Where it wins, where it doesn't
Pros
- Exceptional recovery analytics
- Screenless design removes distractions
- Comfortable for 24/7 wear
Cons
- Requires a monthly subscription
- No screen for quick time checks
Specifications
- sizes—
- battery—
- sensorsHR, HRV, Temp, SpO2
- material—
- charge_time—
- subscriptionRequired
- tierpremium
- battery_lifeUp to 5 days
