WHOOP

WHOOP is a wearable fitness tracker that provides personalized insights on sleep, recovery, and training through continuous monitoring of physiological metrics. Its wrist-worn device measures strain, heart rate, heart rate variability, respiratory rate, and other factors to generate recovery scores that guide users on optimal workout intensities for peak performance.

The WHOOP 4.0, launched in 2021, is 33% smaller than its predecessor and features new sensors, algorithms, and a waterproof battery pack for improved accuracy and wearability. It can be worn on the wrist, bicep, torso, or other body areas through WHOOP's line of performance apparel. WHOOP does not track steps but focuses on strain, sleep, and recovery analysis tailored for athletes.

WHOOP follows a membership model, offering different subscription plans starting from USD 18 per month, with the hardware provided free. Its technology has been adopted by elite athletes across major sports leagues, Olympians, collegiate teams, and the US military for training optimization and injury prevention. In August 2022, WHOOP raised USD 200 million at a USD 3.6 billion valuation.

Key customers and partnerships

WHOOP is partnered with leading sports organizations and sponsored by high-profile professional athletes such as LeBron James, Patrick Mahomes, Sloane Stephens, Rory McIlroy, Justin Thomas, and Noah Ohlsen for training and performance optimization. In 2021, the PGA Tour named WHOOP as its "Official Fitness Wearable."

The company works closely with teams across the NFL, NBA, NHL, MLB, MLS, Premier League, and major collegiate athletic conferences to provide physiological data insights. WHOOP devices are also utilized by the US Department of Defense and Army for research on soldier resiliency and enhancing training regimens.