An enhanced search engine covers your whole library. The pen can be set to ink which emulates a fountain pen, ball pen, or brush pen, you can set three quick access colors and sizes for the main tools on the toolbar, and the highlighter lets you toggle the ability to draw in straight lines.
Maybe Evernote can make this happen in the next update. Photo: macstories. I eventually returned to handwritten notes in a spiral-bound notebook for the remainder of my first degree.
Anything more complicated than that usually counts as a document app. Instead, it's focused only on working with PDF files, not least annotating, highlighting, or signing them. For GoodNotes, that something is its organization options and searchability. Every note you take is a card, with different cards used for different types of content.
In addition to recording text and handwritten notes, Notability also includes the ability to record audio. If you want to return to the main view, get there by closing the journal with a pinch.