In the past, Apple's Fitness app needed an Apple Watch to monitor, track, and display your workouts and fitness routines. Your watch recorded the calories you burn (Move), the length of your workouts ...
The Apple Watch Series 11 on a wrist, showing the watchOS 26 activity rings page. (Cherlynn Low for Engadget) Apple’s iOS 26 and watchOS 26 introduced a new fitness companion called Workout Buddy.