Official Semana Onco app Through this application you will be able to interact with the speaker by sending questions, accessing slides, evaluating each activity and responding to votes, all directly on your cell phone. Makadu Platform. This application is part of the Makadu Event Technology Platform. If you have any questions or suggestions, please contact us by email at [email protected] or by phone/WhatsApp 51 9 9328-0045. Good event!