Apple Fitness+
If you’re a workout enthusiast who likes what Apple’s Fitness+ service has to offer, you owe it to yourself to get an Apple TV, as it’s by far the easiest and best way to enjoy your workouts at home.
Although Apple Fitness+ can be used on an iPhone or iPad, it’s nowhere near the same as following a workout on a larger screen. You can plug your iPhone or iPad into a screen using a cable, or even stream your workout using AirPlay 2, but you won’t get any workout metrics at all doing it this way.
Only the Apple TV will let you follow your progress without taking your eyes off the big screen by showing your Activity rings, calories burned, workout time remaining, and burn bars right where you can see them.