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      Sound-amplification app available on iOS and Android. Free.

      Petralex allows you to create a hearing 'profile'. Using this it then automatically adjusts sounds to your preferences. There is a noticeable time delay between the sound being picked up and processed; this can create an echo between the live speech and the processed speech you'll hear. The delay varies slightly depending on the device you have; Apple devices have the shortest delay.

      This app is not designed to be used in place of a hearing aid. If you are using the app a lot, we suggest that you get your hearing tested.

      Learn more and get Petralex at the App Store (iOS)

      Learn more and get Petralex at Google Play (Android)