Just came across the Procreate Pocket update that recently dropped. It’s good! Very happy to see custom canvas sizes (I was able to get 6000x4000 on my iPhone 8 — only one layer, but painting wasn’t slowed down much at all), and creating custom brush sets on the phone is also nice. I think it’s finally to a point where I can use it for production work.
If you have feedback or questions, feel free to email me.