This "witness" application allows demonstrations to be made to educational institutions in order to make them understand what their own application dedicated to their institution would be like with their name and logo. This application provides a simple way to communicate with students and their parents on the life of the establishment: the latest sanitary arrangements, the start of the school year, appointment requests, menus, the list of teachers by class, feeds targeted information, rules of conduct, etc. And if necessary, send notifications (push alert) directly to the phones of students and parents.