GoodNotes is an app that comes highly recommended by many — especially those in the education field. GoodNotes allows users to take handwritten notes, draw/diagram, mark-up PDFs, and then save it all on a nicely organized “bookshelf”. In addition, GoodNotes allows for easy sharing, page turning, and highlighting. It also automatically saves your work and provides full backup to prevent data loss.

GoodNotes is compatible with iPad and requires iOS 5.0 or later, and is priced at $4.99. Find out more about GoodNotes on its iTunes Preview or at www.goodnotesapp.com