I’m a university student and I use this app all the time. Originally I was using evernote, but I didn’t liek that I had to pay for a subscription. I then switched to microsoft one note, but it was buggy. When I was airing my grievences about my experiences with evernote and onenote to a classmate, he recommended notability. I haven’t looked back since. It does everything I need it to do, and it syncs with my all of devices (iPhone, iPad, and MacBook).
For each course I create a folder, load the lecture slides and take notes, while recording the audio. Its a nice way to refer back to lecture notes with audio.
I also like the fact that its backed-up and synced with iCloud, it makes it easier to switch from my iPad to MacBook.
Finally, I also load the textbooks into the course specific folders, makes it easy to find everything I need pertaining to the course I’m workign on.
kragop83 about Notability, v2.2.0