Lengua y Literatura ESO is an education and reference app developed by Miguel Flecha, available on Android, that aims to reinforce the knowledge acquired in the Lengua y Literatura Castellana class for students in ESO (the first stage of secondary education in Spain).

This app offers a complete program that covers topics such as communication, grammar, orthography, and literature, from the first year of ESO to the fourth. The app divides each year into specific topics and includes exercises and tests to help students evaluate their progress. The app is free and does not require an internet connection.

Lengua y Literatura ESO is an excellent tool for students who want to improve their skills in Spanish language and literature. However, it does not offer any interactive elements or games, and the user interface is a bit outdated. Overall, it is a useful app for students who want to study the subject in a more interactive and engaging way.