Here's how it works: First, you put in your headphones—ideally the ones that came with your phone—and go somewhere quiet. Then, take a hearing test for each ear on five key frequency ranges, changing the faders in each one until you can just barely hear it. Then you can either play music already on your phone, stream it from YouTube, SoundCloud, or Spotify, or use TSC Music's (albeit limited) music library to play music, which the app will optimize for your personal hearing condition. (Additionally, Earlogic plans to add Apple Music, and other streaming services in the near future.)
After a few weeks or a month of daily use (for an hour or two a day) with these customized sound signals with your volume at 50-55 percent, your hearing capacity should improve. But don't take our word for it: you can do a "calibration" test again and see if the minimum audible sound on each frequency has improved.

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