Clarity Clinic · clarityclinic.co.uk
Oura
Ring Gen 4
Our verdict
The most accurate consumer cycle-tracking device. Temperature sensing is medical-grade and correlates well with luteal phase.
Clinician rating: ★ 4.8 / 5
Pros
- +Continuous skin temperature
- +Accurate sleep staging
- +Cycle prediction improves over time
Cons
- -Subscription for advanced features
- -Battery lasts 4-7 days
Evidence
Validated against polysomnography for sleep staging. Temperature-based cycle tracking has strong FDA acceptance for Natural Cycles integration.
Dose
Wear on index or middle finger continuously
Key ingredients
Titanium ring with PPG, temperature and accelerometer sensors
Best for
- · Cycle awareness
- · Perimenopause tracking
- · Sleep and recovery
Not for
- · MRI patients (must remove)
- · Anyone with metal allergies