Oração livro is a free Android application developed by Mirko Martinović in the Education & Reference category. The app is a Portuguese-language Catholic Prayer Book that includes a list of prayers, such as ORAÇĂO DO CREDO, PAI NOSSO, AVE MARIA, SALVE RAINHA, ATO DE CONSTRIÇĂO, GLÓRIA AO PAI, ORAÇĂO AO ANJO DA GUARDA, and many others. It also features selected psalms.

The app is user-friendly and easy to navigate. It is a great resource for those who want to practice their faith and deepen their relationship with God. If you download and enjoy the app, the developer kindly asks for a review and rating. The developer is also open to suggestions and welcomes comments with requests for additional prayers to be added in future updates.

It is important to note that Portuguese is the official language in several countries such as Portugal, Brazil, Mozambique, Angola, Cape Verde, Guinea-Bissau, and São Tomé and Príncipe. Therefore, this app is an excellent resource for Portuguese-speaking Catholics around the world.