I drew this man quickly on my iPad in the app Paper 53. I could recommend the app if you like aquarelle (water colors). But not if you want to use many layers and lots of control over brush size and opacity. Then I’d say Procreate is a much better app for that purpose.
I like the sketchbook feel to Paper 53 and the easy erase tool. But use a lot of other drawing apps as well.
Ill post more of my sketches soon.