The importance of knowing and listening to all those involved in the design and use of nutrition mobile apps. Getting to know the Great GApp

Almost every country worldwide suffers from one or more types of malnutrition. Mobile technology (mHealth) interventions seem to represent a promising approach to this problem because they help share information about healthy eating patterns, offer motivation for behavioral change, etc. From this perspective we introduce a theoretical model that attempts to explain the gap that currently prevails between the elements involved in the development of nutritional mHealth strategies (which we have called the Great GApp). Evidence tells us that it is necessary to consider all the parts involved to ensure positive outcomes of an mHealth-based nutritional intervention: patients, health care providers, and stakeholders (technological companies). If these elements are not considered in the design of mHealth strategies a Great GApp arises, which may lead to lack of adherence to the proposed change, and decrease the potential for improving the quality of health outcomes.