HearingZoom is a lifestyle app developed by JOHN HOU that turns your iPhone into a pair of hearing aids, providing amplified sound for each ear. The app requires the use of a headset and offers features such as amplifying ambient sounds, playing and enhancing music stored on your phone, and even conducting a hearing test to automatically adjust the sound amplification to your hearing level.

For further customization, users can manually adjust the amplification levels and save these settings as individual programs. Multiple programs can be saved and easily loaded at any time, allowing for personalized sound experiences. To optimize the app's performance, it is recommended to use AirPods Pro or high-quality wired headphones or earphones, with active noise cancellation headphones providing the best listening experience. Additionally, users with Bluetooth headsets can utilize their phone as a remote microphone by placing it near the desired sound source for clearer listening.