I have tried SO many drawing applications for iOS and my search ends here. Pixelmator for iOS is an amazing drawing application! It has a nice -- but not overwhelming -- array of brushes. It works wonderfully with the Apple Pencil on the iPad Pro; the app and tools feel made for each other. Even my non-artist partner tried them and was wowed. While the interface is not AS intuitive to me as the interfaces of some other applications, it is easy to learn and makes sense. I make fewer interface-accident-based errors than I do with some of the more intuitive-interface applications. The fact images can go to my Mac via iCloud -- and are compatible in Pixelmator for Mac -- is definitely a plus, too. I have never really left Photoshop for Pixelmator on the Mac, but the excellence of the iOS application does spur me to poke around Pixelmator for Mac more. As I said, I have tried numerous drawing applications for iOS over the years, frequently keeping many on my iPhone and iPad. Finally, I have just one: Pixelmator. :-)