According to CNET, GymKit is available at the Life Time Athletic location at Sky in New York City. This is the sole location where GymKit is available, but it is coming to Equinox locations and additional Life Time Athletic locations in 2018.
GymKit is also available at select locations in the United Kingdom and Australia.
CNET was able to test the GymKit functionality, and found it to work well. Setup was a one-tap affair, with a tap on the equipment and then a confirmation on the Apple Watch. Once paired, health data from both gym equipment and the Apple Watch syncs up for a more accurate reading.
GymKit is compatible with fitness machines from TechnoGym, Life Fitness, Matrix, Star Trac, Schwinnn, Cybex, and Stairmaster, with Apple eventually planning to cover 80 percent of the fitness equipment market. At the gym where CNET tested GymKit, the feature works with ellipticals, treadmills, stationary bikes, and stair-climbers.