Energy Bar is a free, customizable indicator application that is always visible on your Android device's screen. It offers 23 different indicators, including battery life, phone addiction, Wi-Fi, signal, missed calls, and more. You can set the height of the indicator from 1px to 25px, and it can be positioned on the left, right, top, or bottom of the screen with the option to hide it when using full-screen apps.

Energy Bar features gradients, segments, or single colors, all of which are free to use. You can also start the indicator automatically when your phone restarts and set its transparency. The app does not collect, transmit, or sell any personal data, and it runs completely offline.

Overall, Energy Bar is a user-friendly, customizable, and free-of-charge application that provides valuable information at a glance.