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WHOOP
Every WHOOPproduct we've tested, ranked by what we actually recommend.

WHOOP
WHOOP 4.0
$30.00/mo
Pros
- Continuous HRV, respiratory rate, and sleep stage tracking
- 33% smaller than previous generation with 5-day battery
- Strain and recovery scores validated against peer-reviewed studies
Cons
- Subscription-only model — no one-time purchase option
- No screen — all data accessed through phone app