GymKit syncs Apple Watch and exercise equipment metrics during a workout, a system Peloton did not use correctly for Bike+ Bootcamp. Apple Watch can still be used for standard cycling classes on Bike+ One of the key features of the Peloton Bike+ is the inclusion of GymKit. This is a system that allows Apple Watch owners to track their workouts on select gym equipment with a tap. On Thursday, reports of users complaining about a change to GymKit surfaced. Users could no longer pair their Apple Watch when taking the Bike+ Bootcamp course. At first, speculation pointed to competitive reasons since Peloton would soon introduce a wearable fitness tracker. Peloton didn't offer much reason for the feature removal other than it had to comply with Apple's policy.