The Ready State Virtual Mobility Coach is like having a virtual Kelly Starrett in your pocket.
You can smash it.
When you are working on it want to make sure your leg and foot are relaxed so it can absorb the work you are doing. If using a ball I’d recommend using something other than a lacrosse ball. A lacrosse ball can be too hard and the muscle/tissues aren’t able to relax. Yoga Tune Up therapy plus work great. https://yogatuneup.isrefer.com/go/ball-plus-set/ResiliencyProject/