[cormullion]

There are many products in this space on the app store, and probably one to suit every taste. Procreate is more capable - layer blending, design your own brushes. Then there's Brushes, beloved of David Hockney. Plenty of notebook apps too: Notability is particularly versatile, Autodesk has SketchbookX, SketchClub and SketchPad are fun, SketchShare is multiuser via wifi, ArtRage is .... OK better stop.

Paper has a pleasing feel but the minimalism won't suit everyone.

[intended]

I've tried most of the sketching/drawing focused apps except ArtRage, with pro and procreate and the now seldom used brushes, I never felt the need for ArtRage - is there any good reason to pick it up?

I was quite underwhelmed by paper after being exposed to the others, and I have notability as well.