Equalizer Bass Booster FX is an iPhone app developed by VDR APP DEVELOPMENT S.R.L.-D. that allows you to boost your sound volume up to 10 times and adjust bass and treble to your liking. With this app, you can use it as an equalizer and enjoy your music the way you want.

The app also includes additional features with a subscription. You can activate the turn-on button in the equalizer mixer, and boost the volume up to 1000%. The app is compatible with iOSand is available in the Music & Radio category under Multimedia.

However, it's important to note that the app's functionality is limited without a subscription. The app's Terms of Use and Privacy Policy can be found on the developer's website.