Orange Dev centre is a space connected to the Telecom operator Orange that offers different services of training and support in the mobile world. They offer free trainings to students and work to promote a new digital culture in the country. For their next plans, they wanted to get involved more with middle and high school students into apps making and entrepreneurship. This workshop was mainly for trainers who have already a great experience with Android programming but never worked with App Inventor. We got also the visit of 2 high school students who might be in future projects.