If you want to sketch a concept or even a paint an art project, Procreate Pocket delivers all you need to do so.. almost all the features from its iPad counterpart are present in this app. if you are an iOS artist, you owe it to yourself to purchase this app.. you will not need any other app in your Art app folder after that.. I just deleted Sketch Club and Sketchbook mobile after trying Procreate Pocket for a few minutes..
SKR Imaging about Procreate Pocket, v1.01