Manual de Redação Oficial is an Android app developed by Gato Apps that aims to facilitate the process of official writing. The app provides a comprehensive guide on the fundamental characteristics of official writing, including typology, genres, and digital genres. It also features useful tools such as model phrases for introductions, lessons on the art of writing, and tips on how to avoid common mistakes.

In addition, the app covers essential writing structures such as argumentative dissertations and narrative writing for college entrance exams. It also includes guidance on how to write open letters and journalistic genres. The app follows the guidance of the Official Writing Manual and is an essential tool for anyone who wants to communicate with maximum clarity and uniformity in official writing. The app is free and available on the Google Play Store.