Whoop makes a wearable fitness tracker and the app that goes with it. Will Ahmed founded the company in 2012 while he was a student at Harvard, with John Capodilupo and Aurelian Nicolae. It is based in Boston, Massachusetts.
The Whoop strap has no screen. It records heart rate, heart rate variability, skin temperature, blood oxygen and movement around the clock. The app turns this data into daily scores for sleep, strain and recovery, and it suggests how hard to train and how much to sleep. Newer models add features such as a health monitor and blood pressure estimates.
Instead of selling the device on its own, Whoop sells a membership that includes the hardware. Its users include professional athletes, as well as people who train for fitness or want to track their health. The company has partnerships with sports leagues and athletes. Will Ahmed is chief executive. Whoop has raised several funding rounds and remains privately held.