A free program for Android, by AldeaPixel.

Aprende el abecedario jugando (“Aprende el abecedario y juega al rompecabezas“) is a free educational application that will help you learn the Spanish alphabet. The application is based on the game that is popular in Spain and Latin America, and it is used by millions of children. In the game, children are introduced to the different letters and they have to identify them by repeating the letter that they have to learn. 

In this free educational application for children in Spain, you will be able to choose a letter and the letter of the alphabet that you want to learn, and the adventure will begin through an interactive level in which, when you touch a letter, either uppercase or lowercase, it will play an audio with the correct pronunciation, which will be helpful for the auditory and visual understanding of the alphabet.