Several studies have been carried out regarding different interventions in an effort to improve levels of physical activity in people with an intellectual disability (ID). Studies have been carried out regarding physical activity interventions (1), educational interventions (2), and multimodal interventions (3). New technologies are currently being used to carry out changes in daily habits and to promote health in different pathologies but not in people with an ID (4;5). Due to the poor maintenance of physical activity that we have found in people with ID, the objective of the present study is to determine the maintenance of levels of physical activity, quality of life, self-efficacy, and social support in this population through an intervention with an application in their smartphones.