Developer's DescriptionBy The Seven+ ProjectControl volume of all aps in your Android device.Noyze Volume Panel is a free app that gives you complete control over your device's volume buttons. It is the only volume panel that does not require root access, a custom ROM, the Xposed framework, or an unlocked boot loader. Just activate Noyze in Settings > Accessibility and enjoy. It comes preloaded with tons of settings, including master volume (sync all volumes), long press actions (next/ previous track or launch a shortcut), themes, and much more.