**1. Introduction**

Reading and writing are fundamental activities in our daily lives. Their acquisition and mastery are essential for the proper development of children and have a great impact on their adult life. But before being able to read and write, generally from the age of six years old, these children must first acquire a series of skills that will enable them to learn to read and write as well as prevent the appearance of future difficulties in this process. These cognitive abilities [1] are, among others, attention, decision making, learning, reasoning, perception, language abilities, or memory. Therefore, early attention provided in the first years of childhood will improve these pre-reading and pre-writing skills in children who are likely to have difficulties in this area.

This work presents the development of an Android mobile application, referred to as an *app*, which aims to help in this preventive intervention during preschool and early childhood education (0–6 years) by stimulating those early skills through games designed by the authors. These games use the ARASAAC pictograms of the Government of Aragon [2] as a vehicle of accessible communication for children with cognitive difficulties. One of the highlights of this *app* is that it allows the professional to follow the child's progress through a statistics module so that they can detect the area of difficulty and enhance the training by focusing on appropriate games.

This work is structured as follows: Section 2 details the materials and methods used; Section 3 shows the results of this work, with a functional *app* verified by the entity and its users; and finally, a discussion is presented in Section 4.
