Volume Booster app is a simple and small sound booster app to boost your speaker or headphone sound volume. Useful for movies, audiobooks, music, videos and podcasts. Volume Booster app is a trusted sound booster for people who need louder audio volume from their device, headphones or speaker. Use Volume Booster app to boost your speaker or headphone audio volume for louder hearing. Volume Booster supports speakerphone, headphones, loudspeaker and external speaker. Use at your own risk. Playi