USA Flag Zipper Lock Screen is a personalization app developed by Best Zipper Lock Screens for Android devices. This free app allows users to customize their lock screen with a patriotic USA flag design. With this app, users can choose their own wallpaper for the locker screen and device background, change the zipper style, color, and design. The app provides various useful widgets and interesting themes for decorating the lock screen while protecting privacy and ensuring security. It also has a password option that users can use before unzipping the lock screen. Overall, USA Flag Zipper Lock Screen is an easy-to-use app that offers an in-depth personalization option.