Vertretungsplan GBG is an iPhone application specifically designed for students and teachers of the Georg-Büchner-Gymnasium. This app allows users to view substitute lessons and select their own courses, ensuring that only relevant information is displayed. With a focus on ease of use and accessibility, Vertretungsplan GBG provides a convenient way for users to stay up-to-date with any changes to their schedules. Whether you are a student trying to find out which class to attend or a teacher needing to plan your lessons accordingly, this app is a valuable tool for managing your daily school routine. Stay organized and informed with Vertretungsplan GBG.