This app has a lot going for it. The brushes are great and the UI is very intuitive. Painting is pleasurable on a single layer. The problem arises when you need to use additional layers. As is, it is impossible to use. The functionality is supposed to be there, but changing the order, blend mode, and visibility of the layers ranges from difficult (to turn visibility on and off) to insurmountable (changing the layer order is completely undoable right now). The only workaround I can think of is to add a bunch of empty layers ahead of time and to work from the top down, but really it just needs to be addressed and fixed. With a functioning layer system, Im certain this will be a superb app.
Mr Maroon about Procreate Pocket