Notability is a useful app.
The app is very useful in note taking, with a semi-unique layout for tools.
The app has a decent organization system, with great folders and decent space. The app has a great pen tool with a variety of options.
The text box tool is a little confusing but only needs some getting used to. The exporting is barely compatible with any other apps, making a huge impact on how I'm using the app.
I have found better apps, but this app is: So Fetch