The way Muviz Edge works is simple. In the app's settings you can choose the type of lighting that you want to see around the edges of the screen: if you want the light to stay on and fixed in place, if you want it to move around the screen, if you want it to flash, and so on. Similarly, you can enable and disable the LED that usually turns on by default with notifications, or make it light up in another way. You can also make it light up only the area of the screen surrounding the camera.
Lastly, you can also set the LEDs to the color you want or create gradients with up to three colors, which will fluctuate around your screen. Basically, you can configure these LEDs to do anything you want. Also, you can even associate the brightness of the LEDs to a specific type of notification, and make it light up in one way or another depending on whether you have a Telegram message, a Twitter message or a missed call.
Muviz Edge is an interesting customization app. Although it will make your battery die faster, it may be worth it if you're looking for a new option to give your phone a unique look.