The Oura Ring Gen 4 delivers superior sleep‑stage accuracy (95% vs 89% per RTINGS) and adds temperature‑based menstrual insights (per Women’s Health), but it costs $100 more than the Galaxy Ring. Samsung’s Galaxy Ring offers solid heart‑rate and SpO₂ tracking at a lower price and integrates tightly with Samsung Health (per The Verge). For users entrenched in the Samsung ecosystem or on a tighte...