First let me congratulate you stepping of the beaten path! I have zero drawing skills so...
I looked at Procreate and if I understand correctly it is pure drawing.
The strokes are rough but the lighting and shadows are correct.
Just like in any kind of painting there are many styles and I actually like this one.
For my sins I have just bought an iPad pro 12.9" and my first purchase was Procreate. So yes it is the iPad version.
To answer Lamberts question in the same post - it wasn't quite a webcam capture but it was an accidental camera capture from the iPad.
The whole process is using the smudge tool with an oil painting brush on Procreate and took no more than a couple of hours on the iPad using my finger as the brush. Remember it is less than 24 hrs since getting the iPad pro! Already I am excited by the opportunities!