Volume Booster Pro is a free volume boosting app for Android.

The sound booster is designed to mimic a high quality stereo system. No need to invest in expensive speakers and difficult installation; you can carry a full quality stereo in your pocket and use it any time.

Volume Booster Pro is different from other volume boosting applications because it's careful to preserve quality along with sound. Other applications fragment sound when the volume is amplified. But when you tap on the speakers and amplify the sound with Volume Booster Pro, the app accesses Android's built-in equalizer. It uses a special algorithm to optimize the frequencies and operating channels, so the sound is more delicately balanced and far clearer.

There are four volume types that the app can boost: notification volume, alarm volume, ringer volume, and media player volume. You can also combine any of the four if you need more than one aspect of your system amplified. The volume of both speakers and headphones will be improved. It'll sound like you're streaming your music and video through a HiFi system.

Volume Booster Pro has a minimalist, aesthetically pleasing user interface. It only requires one tap to increase volume. No complicated fiddling necessary; the app does all of that for you.