To lose the address bar and tabs for good: tap Share, then Add to Home Screen, and open FIT from the icon. Best done before you start: the home-screen app keeps its own history, favourites and program, separate from Safari's. Already started? In Saved & ready-made, tap Copy to another device, then Restore in the new app.
Tick what you can use. Anything that needs gear you haven't got is swapped for a bodyweight move.
You can change any of this later: tap Change on the home screen.
Check with your doctor before starting if you have an injury or health condition, and stop if anything hurts.
Tap a move to swap it for one like it.