Lautstärke Erhöhen funktioniert nicht

Adjust low frequencies and feel your music in a new way. * Subscription Bass Booster – Volume Boom get access to all functions of the application. * You can turn off the auto-renewal at any time: you'll find the option to do this change to a different payment plan in the settings of your iTunes and App Store account. * The first time you can try the free trial for 3 days.  Boost the bass, adjust the volume and enjoy the new sound of familiar tracks.  Give more depth to your favorite tracks and listen to your favorite songs in new quality.  After that, your account will be automatically charged for the subscription if you will not stop it before the end of the free trial. * The length of the subscription is 1 month, this subscription is auto-renewing. * Account will be charged for renewal within 24-hours prior to the and of the current period, and identity the cost of the renewal.