Between the Ring 4 and Galaxy Fit 3, the Ring 4 comes out ahead in water resistance, while the Galaxy Fit 3 wins on battery life and sport modes. Overall, the Ring 4 scores 52.9 and the Galaxy Fit 3 scores 63.4 on our Mars Score.
Which should you buy?
The Galaxy Fit 3 is the clear pick on raw spec strength, leading by 10.5 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.
Pick the Ring 4 if you care most about water resistance. The biggest gaps in its favor are water resistance.
Pick the Galaxy Fit 3 if you care most about battery life and sport modes. Its strongest claims are battery life, sport modes.
Both ship with comparable gps, spo2, so those specs don't separate the two — focus on the differences below.
Bottom line: the Galaxy Fit 3 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
- ▲Water resistance — 5.00 ATM more. 10 vs 5.
Why Samsung - Galaxy Fit 3 wins
- ▲Battery life — 62.50% more. 13 days vs 8 days.
- ▲Sport modes — 60.00 more. 100 vs 40.
Spec comparison
Fitness
| Spec | Oura - Ring 4 | Samsung - Galaxy Fit 3 |
|---|---|---|
| GPS | false | false |
| Heart rate | true | true |
| SpO2 | true | true |
| Sleep tracking | true | true |
| Sport modes | 40 | 100lead |
Battery
| Spec | Oura - Ring 4 | Samsung - Galaxy Fit 3 |
|---|---|---|
| Battery life | 8 days | 13 dayslead |
| Water resistanceⓘ | 10 ATMlead | 5 ATM |
Design
| Spec | Oura - Ring 4 | Samsung - Galaxy Fit 3 |
|---|---|---|
| Display size | 0 " | 1.6 "lead |
| Weight | 3.3 glead | 18.5 g |
Frequently asked
Spec-level deep dives
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