But with the golden bonus that actually there isn't any iOS version of Adobe Illustrator!!

So actually Affinity Designer is the "Lion King" for vector things on iOS (and IMHO for mobile in general).

It was launched only some days ago so actually is still young and needs a certain amount of bug fixes obviously, and in fact I have already reported some bugs on Affinity Forum, but for what I've seen in the last three days of hard use it's really a game changer for all 2D graphics on mobile.

It's the missing link between Procreate and Affinity Photo.

Procreate (or Artstudio Pro) + Affinity Designer + Affinity Photo = almost ALL you need for a REAL professional 2D graphic pipeline on Mobile!

This is what I'm experiencing with my iPad Pro 12.9 2017.

Cheers.