Volume BooSter

簡單，優秀的應用程序，控制手機音量（音樂，語音，報警，系統）

Simple light-weight app to boost your speaker or headphone sound volume.

Useful for music, movies, and audio books.

Playing audio at high volumes, especially for a prolonged amount of time, can destroy speakers and/or damage hearing. By installing this application you agree that you will not hold its developer responsible for any damage to hardware or hearing, and you are using it at your own risk.

Please note: This app is can't boost volume in phone calls.