Between the Ring 4 and 5.0, the Ring 4 comes out ahead in several specs, while the 5.0 wins on sport modes and battery life. Overall, the Ring 4 scores 52.9 and the 5.0 scores 65.3 on our Mars Score.
Which should you buy?
The 5.0 is the clear pick on raw spec strength, leading by 12.4 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
The Ring 4 doesn't pull ahead on any single popular-comparison spec — its strengths sit in the spec table groups rather than the headline advantages.
Pick the 5.0 if you care most about sport modes and battery life. Its strongest claims are sport modes, battery life.
Both ship with comparable gps, spo2, water resistance, so those specs don't separate the two — focus on the differences below.
Bottom line: the 5.0 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Oura - Ring 4 wins
- No decisive advantages.
Why WHOOP - 5.0 wins
- ▲Sport modes — 80.00 more. 120 vs 40.
- ▲Battery life — 75.00% more. 14 days vs 8 days.
Spec comparison
Fitness
| Spec | Oura - Ring 4 | WHOOP - 5.0 |
|---|---|---|
| GPS | false | false |
| Heart rate | true | true |
| SpO2 | true | true |
| Sleep tracking | true | true |
| Sport modes | 40 | 120lead |
Battery
| Spec | Oura - Ring 4 | WHOOP - 5.0 |
|---|---|---|
| Battery life | 8 days | 14 dayslead |
| Water resistanceⓘ | 10 ATM | 10 ATM |
Design
| Spec | Oura - Ring 4 | WHOOP - 5.0 |
|---|---|---|
| Display size | 0 " | 0 " |
| Weight | 3.3 glead | 21 g |
Frequently asked
Spec-level deep dives
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