Requirements for Apple Fitness Plus Using Apple Fitness Plus requires users to have an iPhone, iPad, or Apple TV, as well as an Apple Watch Series 3 or later. You can complete workouts on Apple Fitness Plus without your Apple Watch on hand, but you must have one to sign up. How to sign up for Apple Fitness Plus If you want to try out Apple Fitness Plus for yourself, Apple offers a one-month free trial before moving on to the subscription-based plan. To sign up, have your iPhone, iPad, or Apple TV handy — the directions are about the same for all devices. Just remember to have an Apple Watch ready.