Examen Ciudadania 2019 USA Aud is an Android application designed by Designing Your App that helps individuals prepare for the United States of America's citizenship test. This updated version for the year 2019 features 100 questions along with their respective answers that are asked during the final citizenship interview. With the continuous playback (play) function, users can listen to the questions and answers to prepare for the interview.

The app allows users to select the questions they want to listen to, focusing on the ones they find difficult. Additionally, the app includes buttons for users to select the language in which they want to view and listen to the questions (English and Spanish).

Some of the other key features of the app include real-time translation between English and Spanish, the ability to mark questions as favorites, the option to listen to all the questions in either English or Spanish along with animations to improve pronunciation, and the ability to listen to the United States' national anthem and view the lyrics. Users can also read the text of the citizenship oath, making it an all-in-one citizenship test preparation app.