Enhance your device’s volume by 30% to 40% with Volume Booster. Automatic calibration of device sounds at a single tap on icon of the app. Increase sound quality; convert your android device to a professional media boom box.
App works easily with both headphones and in-built speakers. Ringer, voice call and alarm are also noticeably enhanced.
All volumes increased without damaging your phone! No spam or virus in the app!
Though third party ads supported, but it is the best volume Booster available on the Google Play.