Download of Bass Booster 0.1.31 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The actual developer of this free Mac application is Ekaterina Krivtsova. The application lies within Audio & Video Tools, more precisely Players.
From the developer:
Bass Booster is designed to help you improve the quality of your music so you can get the most out of the best songs. The application allows you to boost the bass and adjust the volume. This way, you can give more depth to your favorite tracks and enjoy the new sound.
You may want to check out more software for Mac, such as Focus Booster, Drum & Bass Producer or Network Booster, which might be similar to Bass Booster.