If you have Apple devices: There’s a free app called “Mimi - Hearing Test” that works together with Apple AirPods and allows you to test your hearing of differe

If you have Apple devices: There’s a free app called “Mimi - Hearing Test” that works together with Apple AirPods and allows you to test your hearing of different frequencies. From the results you can create a profile which you can then set in the iPhone’s accessibility settings so it will adjust the audio output of the AirPods accordingly.