Many people listen to music while walking, jogging, working out, doing their homework, etc. and most of them use headphones or ear buds so that they don't bother the people around them. Unfortunately, if you spend a long time listening to loud music in your headphones, you will eventually start to experience hearing loss. TSC Music is a new music-listening app for iOS that doesn't only aim to help preserve your hearing, but it actually tries to make it better.
At the moment, the application allows you to play songs only from YouTube, Spotify, SoundCloud or its own library. However, according to the developers, support for more services including Apple Music will be added in the near future. What's really cool about this application is that before it starts playing your music, it will first test your hearing by playing five key frequencies and identify the frequency you hear the least. Once that's done, TSC Music will automatically equalize your songs to stimulate your ear's threshold hearing level. Additionally, the application tracks your hearing daily and can create charts so that you can see if it's getting better or worse.
Honestly, I'm not completely sure about the science behind it, so I don't know how much it will actually help your hearing, but the idea seems pretty cool, so you could give it a go. If music is one of your favorite ways to pass the time, you may also want to read: "How to make custom playlists on your iPhone with Apple Music" or "Top music apps for kids".