The app allows the student to access content for review in liquid format, in the audiobook and downloadable e-book. The goal of the app is to provide the student with a teaching tool that is easily accessible and accessible to everyone, which can be used on any device. For assistance contact the toll-free number 800.642.865 (active from Monday to Thursday from 9 to 12 and from 14 to 17, Friday from 9 to 12).