USCIS: Civics Test Study Tools is an official smartphone application developed by the US Citizenship and Immigration Services (USCIS) of the Department of Homeland Security (DHS). The app is specifically designed to help individuals study for the civics test portion of the naturalization interview. The app offers a comprehensive list of all the 100 official civics test questions and answers to help you prepare for the actual civics test.

The app is available in both English and Spanish with audio support for questions in both languages. The application also features a practice civics test to gauge your understanding of the questions. Additionally, the Question Challenge game is available to test your knowledge and see how many questions you can get correct in a row. The application will show your high score, making it an engaging way to study for the test.