iPad art flowers

This illustration app I'm using is quite a primitive app, but it does allow me to play around with ideas. The thing is: computer generated art does allow you a quick way to try different colours and ideas. And also provides you the ability to "back up" if the path you picked turns foul.
BUT...it absolutely misses the most organic aspects of : rough watercolour paper against the hand...pen, paintbrush, little jars of water, tubes of water colours all askew on the table.
Nothing is better than the real thing...