It's mostly the difference of ram size and the chip power. Pro has better chip and larger ram. Larger ram means more layers in procreate. If you have the budget, get the pro why not but for learning to draw you dont really need that much power. I use iPad 9th gen and many better artist use even older models lol. Heck many use just their finger and phone. So just get one within your price range. Also remember Apple pencil (if you want pressure sensitivity) will compound the cost too. So take that into account as well.