Notability

Awesome app for creating your own PDFs. Combine hand writing and typing all you want. It works and doesn’t crash. Have been using this app for 6 month now - not a single crash. As an engineer I can only complain that it lacks figures. It’s a bit of a pain to draw coordinate systems and graphs free hand. Would be so much easier if the app had straight lines, circles, squares and such.. I am using it on a Macbook, just in case. A part from the figures - awesome!

AlexAndrosov about Notability, v2.2.0