Question: what are good art apps?
Answer: Adobe Illustrator Draw. Drawing rich and vibrant sketches with vector art is rewarding: they look clean, and the art scales seamlessly no matter the size you work at. ... 
MediBang Paint. ... 
GIMP. ... 
Procreate. ... 
iPastels. ... 
Zen Brush 2. ... 
Pixelmator Pro. ... 
Assembly.