Teacher ToOl Free Edition is an Android application designed to assist teachers in their daily tasks. Guilbert Arnaud created this app to help teachers create and organize their classes, manage student places and organize various kinds of lists such as notation, truancy, and participation.

The latest version of the app, V3.0.1, has new navigation modes, a dedicated student list page, and a color code for evaluation. The app has undergone several improvements since its inception, including bug fixes like "crash to display the list of students if no group is selected" in V2.0.3. The app also allows teachers to create sub-groups like Group A, Group B, Support, and more. Additionally, the app supports the Spanish language and has undergone various bug corrections to prevent crashes.

Overall, Teacher ToOl Free Edition is an innovative classroom management app that helps teachers stay organized and manage their classes efficiently.