Wearable Sleep Trackers

Oura Ring Gen 4 vs. Whoop 5.0: Which Tracker Rules 2025?

Oura Ring Gen 4 on a dish next to a Whoop 5.0 strap and a smartphone showing sleep app dashboards on a bedside table

Wearable sleep trackers are now central to sleep health. This guide compares Oura Ring Gen 4 and Whoop 5.0 across sensors, sleep scoring, comfort, ecosystem and value to help U.S. buyers choose the best device for improving rest in 2025.…

29.12.2025
30 mins

Understanding HRV: Why Your Sleep Tracker’s Most Important Metric Matters

Person sleeping on a smart mattress with a sleep tracker ring and phone on the nightstand displaying an HRV graph alongside a white noise machine

Heart rate variability (HRV) is emerging as the most meaningful metric your sleep tracker records. This article explains what HRV measures, how reliable tracker readings are, and how to interpret nightly HRV trends to improve sleep and recovery. You’ll get…

25.12.2025
32 mins

Best Sleep Trackers 2025: Top 10 Wearables Tested and Ranked

Nightstand with a smartwatch on a charger, a sleep ring on a tray, a smartphone showing a sleep app, a white noise machine, and a corner of a smart mattress in warm evening light.

We tested the latest sleep wearables and complementary sleep tech to find which products truly improve rest in real homes. This guide explains our testing approach, ranks the top wearable trackers for 2025, and shows how smart mattresses, apps, and…

24.12.2025
36 mins