Hear without limits! Now you will even hear the whispers with a hearing amplifier. Petralex Hearing Aid App will automatically adjust to specific features of your hearing. Use the power of your smartphone and latest technologies as a maximum sound amplifier. No registration and no advertisements. You only need a regular headset in order to use this hearing app. Hundreds of thousands of hearing impaired people have chosen Petralex to help their hearing. This app was chosen as Microsoft Inspir