Drawing with an app is still “real” drawing. Yes, people still draw using other techniques. As far as I can tell, your head and shoulders do not affect the answer to your question.
Well, I do. I take a weekly portrait class with live models, and the first meeting of the month is for drawing: rendering a realistic likeness on paper with graphite pencil. The rest of the month, we work on a painting of the same model. We just do head and shoulders.
Yep. I draw with graphite and sometimes other mediums, colored pencil, chalk, charcoal, pastel. Lots of people use apps and lots of people draw with digital programs.
At our office Christmas party, there was a caricaturist who drew with colored pens, and an electronic portraitist who drew on an iPad, then printed it to be almost indistinguishable from colored chalk on dark paper.