I recently purchased a stylus for taking notes on my iPad. I need some recommendations for a good note-taking app where I can use the stylus as well as the keyboard when I don't want to take handwritten notes. The app should have a palm rest feature, the ability to zoom-in, smooth pen strokes, ability to insert graphs. Penultimate NoteShelf Notability Note Taker HD I like Penultimate and Noteshelf's UI but do they have the features I want? What do they lack?