You can't improve what you don't measure. Wearable sleep tracking has matured rapidly, and finger-worn rings now rival chest straps for resting heart rate and HRV accuracy.
This ring tracks sleep duration and consistency, overnight heart rate, and recovery trends — with a readable app that focuses on long-term patterns instead of daily noise.
Why we picked it
- Strong published validation data for heart rate and sleep-duration accuracy.
- Week-over-week trend focus reflects how sleep science actually works.
- Comfortable enough to wear every night — the metric that matters most.