This app is great overall. I just have a few issues with, that frustrate me as artist. I list those things below.
Here are a few features that really make me not want to use this app as much as my other go to drawing apps:
No redo button (but theres a undo button), no Apple Pencil support and the layers seem to not work as Im used from other developers (think Procreate)
TheUnCoolAid about Pixelmator