

I bought the Runtastic six pack abs trainer and butt trainer (one time $5 fee for each app) several years ago and have gone through each program a number of times with excellent results. Especially considering the workouts were only about 10-15 minutes each (so 30 minutes to do one of each). These apps have been discontinued for new downloads but I bet you could fine similar apps for free or cheap that don’t require subscriptions.
This guy sounds like a gem of a human