Study and concept of an application for behavioral change in the area of physical and mental healthcare on overweight young adult people in Colombia. The aim of the thesis is to design a service capable of modifying people’s behavior in a virtuous way. The methodology followed integrates the characteristic aspects of interaction design alongside the discipline of behavioral changing. Currently, overweight disease is worked by particularly areas of expertise like nutrition, physical activity and mental health where there is little connection in each component to provide a complete and interactive treatment to patients in the health system. The expected results are an application that is made up of an interdisciplinary professional team, which offers personalized treatment to their patients with behavioral change strategies such as social incentives and points, which are used to feedback and reinforce people’s progress with the output data recollected by the app..