Simple, small, free without ads app to boost your speakers or headphone sound volume. Useful for movies, audiobooks, and music. Key Features: 1. Adjust system volume inside the app. 2. Increase/Boost your speakers or headphones volume. 3. Global equalizer to adjust any music or sound frequency. 4. Available in dark mode as well. So that you can use the app while watching movies in the dark. 5. You can easily stop the app from running in the background by clicking on the “Stop App Service” butto