Vi, is a personal trainer that lives in your earbuds, alongside a heart rate monitor, but even the delightful AI wasn't enough to get me out on the street every day.
It's the same old story: get excited about a new exercise accessory, declare to to oneself (friends, family), "With this, I can do it!", and a month or two later the accessory is gathering dust. In the 1950s it was treadmills and stationary bicycles, today it's AI personal trainers.