Dictionnaire Grammatical du Mauvais Langage ou Recueil - Des expressions et des phrases vicieuses usitées is a comprehensive guide to the French language. Developed by Edson Deda, this Android app is free to use and falls under the category of Education & Reference.

The app is designed to help users understand the French language better by providing a detailed explanation of the language's grammar and vocabulary. The app offers solutions to several grammatical difficulties that are not explained in any grammar book. Moreover, it provides the etymology of vicious locutions and includes amusing anecdotes related to the subject. This new edition has been revised with care and enriched with more than a third of new content. It aims to become an essential tool for all French language enthusiasts, providing a reliable source of reference for all language-related discussions.