The United States History app, developed by Petey Light, is a free educational and reference app available for Android users. The app offers a vast amount of historical information, including the Constitution (broken down by article), Declaration of Independence, United States military ranks and history, Bill of Rights, and a great summary of each president under the current Constitution. The app also includes important documents, such as the Flag Code, The Star-Spangled Banner, The Pledge of Allegiance, Articles of Confederation, Federalist Papers, Anti-Federalist Papers, and information about the branches of government.

The app provides a simple and user-friendly interface, allowing users to access information easily. The app will be updated periodically with new information, and users can report any mistakes or bugs via email. However, it is important to note that the app could contain errors, and users should not rely on the information to study for tests or answer Jeopardy questions. The app does not necessarily reflect the political views of the developer, and all information is borrowed from credible sources. If you find the app useful, please consider donating by hitting the "donate" menu button in the app. Overall, the United States History app is a great resource for anyone looking to learn more about the history of the United States.