Sorry to say...

...I was a wasted of Money! Till today it is not possible to record audio notes, to draw full screen sketches like Notes Plus, to insert mathematic formulas and so on. To work with PDFs not possible!

I dont know where this should be useful, I think it is still faster to write with a stylus as with the keyboard.

Good bye course notes! There are better apps and the developers there are always listening to their customers.

Namubi about CourseNotes, v2.1.1