The measures above were taken from validated questionnaires.

*The International Physical Activity Questionnaire (IPAQ), Physical Activity Stages of Change—Questionnaire (RM 1-FM), Self-Efficacy for Managing Chronic Disease (SEMCD), System Usability Scale, Leiden Index Depression Sensitivity-Revised (LEIDS-R), Behavioral Activation for Depression Scale- Short Form (BADS-SF) and Social Support Scale were modified to match the sociodemographic characteristics of our patient population (ie, rephrasing to decrease literacy levels). The Patient Health Questionnaire depression scale (PHQ-8), Generalized Anxiety Disorder 7-item (GAD-7) scale, Behavioural Avoidance/Inhibition Scale (BAS/BIS), Mobile Phone Affinity Scale, Neighbourhood Scale, University of California Los Angeles (UCLA) Loneliness 3-item scale, Consumer Assessment of Healthcare Providers and Systems (CAHPS) scale and System Usability were not modified. We translated the RM 1-FM, the Neighbourhood Scale, UCLA Loneliness 3-item subscale and Mobile Phone Affinity Scale questionnaires into Spanish. For the PHQ-8, GAD-7, BADS-SF, BAS/BIS, SEMCD, IPAQ, LEIDS-R, CAHPS scale and System Usability Scale, we used validated translated versions used in previous studies. The Spanish translations of the BADS-SF, LEIDS-R, SEMCD and IPAQ were modified to match the sociodemographic characteristics of our patient population (ie, rephrasing to decrease literacy levels).