The research analyzed the desertion of child vaccination in Peru, because parents could not immunize their children and that they changed their place of residence, taking refuge in the countryside for fear of contagion of COVID-19; and the shortage of work as a result of the measures taken by the state in the face of significant increases in COVID-19 infections, brought serious consequences in the decrease in the percentages of vaccinated children with a decrease to 61.1% of childhood immunization, as a result of the long and difficult processes to be able to immunize a minor in a vaccination establishment different from the one that attended for immunization; the objective being to increase the percentage of immunized children, through the use of a mobile application, where the parent will have the option of viewing the list of nearby vaccination facilities where they wish to immunize their child, as well as being able to make changes to the establishment of vaccination, avoiding the long and difficult process that currently has to be carried out in order to make a change in the vaccination establishment. The methodology used is Scrum; thanks to this methodology, the work was carried out efficiently and satisfactorily. The result of the research was satisfactory, and this can be said thanks to the results of the survey carried out with parents, where the majority indicated they agree on how important and efficient the web application is; thanks to the fact that it facilitates the change of health facility for many parents who had to change residence and take refuge in the countryside due to lack of work and fear of contagion of COVID-19.