Guia Cadastro Único Dúvidas is an Android app developed by Auxilio Apps that provides valuable information about Brazil's Single Registry system. The app is free to download and use and falls under the Business & Productivity category, specifically Finance. The app's main purpose is to help users with queries and registration for the Cadastro Único (CadÚnico) system, and also offers a calendar for the government's Family Scholarship program, Auxílio Brasil.

The Cadastro Único is a registry created by the Brazilian government to identify low-income families and individuals and provide them with social assistance. The Guia Cadastro Único Dúvidas app offers a comprehensive guide on how to register for the Cadastro Único, how to consult the Single Registry, and the various programs that use it. The app is not affiliated with any government entity and is not an official source of information.