I do all my Shapr3D modeling on an iPad Pro. I find it fast and easy to model with the Apple Pencil while at the same time using finger(s) for workspace navigation. I can do everything with one hand except when naming bodies and for exporting.
My basic workflow consists of modeling on the iPad Pro and exporting STL files to my desktop iMac via AirDrop for 3D printing. Likewise I can import files (3D files, images, etc) to my iPad also via AirDrop.