Abstract
It is essential to highlight that, to ease learning processes and produce a fruitful pedagogical experience, reading and writing skills development requires didactic tactics different from those used in the traditional classroom. The research aims to design a prototype mobile application for teaching letter courses to first graders in a didactic way to enhance the communicative skills of children. The method used is the cascade, which allowed us to understand and solve the problem. The results obtained are the designs of the prototypes, which were designed to teach letters to children in the first grade of primary school. Likewise, a good appreciation was obtained in the surveys conducted on the application.