A free program for Android, by Kly Apps.
This free and simple application is designed to increase the volume of your Android device. It can boost the sound of your phone or tablet!
You can use it to listen to all your favourite songs, even if they are playing at a low volume. Plus, it works in the background, so you can use other apps at the same time.
It has different volume levels such as 30%, 60%, or mute. You’ll also love that it works efficiently even without an internet connection.
How to use it:
Open the application and select your preferred volume level.