I also have the Mini 4 and the Pro. The Mini 4 is my day-to-day iPad and goes everywhere with me. The Pro goes a lot of places with me, but is mostly just for drawing and taking notes. As much as I love drawing on the Pro, I do wish the Pencil was somewhat compatible with the Mini 4 - even if it only worked like a Bluetooth stylus - just so I could use it for taking notes. As it is, I carry my Adobe stylus to take notes on the Mini.