Hello I am new to this forum and have a question about an app for the iPad. I love to draw and have several drawing and sketching apps on my iPad; Sketchbook Pro, Procreate, Sketch Club, ArtRage, Inspire Pro, ASketch and ArtStudio. Recently I heard from a friend about layers but they only have the Standard version of layers. What is the difference between Layers Pro and Standard? Also is it worth it or should I stick to the current apps I have? Any other recommendations? Thanks for the help.