Google - Inspire 3 vs Oura - Ring 4

The Inspire 3 edges ahead on the Mars Score (57.2 vs 52.9), but the 4.3-point gap is small enough that the right pick comes down to which spec advantages matter to you.

Pick the Inspire 3 if you care most about battery life. The biggest gaps in its favor are battery life.

Pick the Ring 4 if you care most about sport modes and water resistance. Its strongest claims are sport modes, water resistance.

Both ship with comparable gps, spo2, so those specs don't separate the two — focus on the differences below.

Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity tells you both are well-rounded; the differences are about trade-offs, not quality.