This Android app allows users to restore menu buttons that have disappeared from their device, without requiring root access. It is particularly useful when the physical buttons on the device are not functioning properly. The main functions of the app include showing the menu button, registering applications to use, and customizing the buttons according to user preferences such as size, transparency, color, icon, and position. Users can freely add buttons and customize their behavior when tapped or held down. The app also provides additional buttons such as back, home, recently used app, power, volume up, volume down, mute, enter key, space bar, arrow key, tab key, page up, and page down. It should be noted that this app adds a keyboard and requires the AccessibilityService API for its functionality. The purpose of using this API is to display buttons that can invoke home, back, power menu, etc., and to reflect user settings when the displayed app changes. No data is collected or shared through this API. The app also uses the QUERY_ALL_PACKAGES permission to allow users to register favorite apps and use them as app launchers, as well as to automatically activate the app's features when launching a favorite app.