What I think the person is looking for is basically what Procreate does, it records your strokes which is a lot more efficient & takes less resources & file size then screen recording. Personally I’d be more interested in the addition of tools/workflow features, than this as there are alternative means to accomplish this request with minimal effort on the users part (iOS 11 a swipe up & a button press, iOS 12 a swipe down from the top right & a button press). No offense meant, just saying...I get & agree on the premise of a stroke recorder, just can’t really see the justification for the development process of it when there are viable & easy alternatives (in my opinion)