Notability is a featured app because of the wide variety of multimedia that can be added to individual notebooks. Hand drawings, text, photos and shapes can be placed and moved as objects on individual pages within a notebook. Audio files can be recorded and embedded into a notebook. Zoom target features allow for precise entry and editing of objects. Multiple undo/redo makes changes on notebook page a snap. Notebooks can be grouped in categories and subjects for convenient retrieval. Entire notebooks and individual pages can be exported as an e-mail, into iTunes, or to Dropbox.  Notability is a paid app that works with iPhones, iPod Touches, and iPads.