US Flag is a personalization app developed by App4Joy for Android devices. The app offers basic information about the US flag for educational purposes. Additionally, it provides a US flag live wallpaper that users can set as their device background.

One of the unique features of the app is the flag maker. With this feature, users can create their own flags for their favorite sport team, school, company, or any other purpose. Users can add their own photo and customize the flag as per their preferences.

It is important to note that users must read the Terms of Use before using the app. The developer site provides attribution for the images used in the app.