US Citizenship Test 2021 is a free Android application designed to help individuals prepare for the mandatory US Citizenship Naturalization Test. Developed by Citizenship Apps Space, this app offers a comprehensive set of features to help users pass the test with confidence.

The app features all 100 possible civics questions that are related to the citizenship test, with the option to study by category or flashcards. The flashcard feature allows for better practicing, while the quiz test checks the user's knowledge on the citizenship test. The app also includes reading and writing vocabulary, as well as exam details, settings, and chat room.

With the option to view all questions on the USCIS Civics Test, users can study at their own pace and in sequential or random order. The app even includes a sound on/off option and the ability to show/hide correct answers. Overall, US Citizenship Test 2021 is a helpful tool for anyone looking to become a US citizen and pass the Naturalization Test.