Some people really benefit from it, others don't notice any difference. The experiences can be found on the Internet. If you suffer from hyperacusis, please be careful when using the app. Start with a few short periods of use at a very low volume. When the therapy shades cause negative effects, do not continue using the application. In addition to therapy tones, you can add masking white noise, pink noise, or brown noise to make it more enjoyable. You can also use the masking noise without the therapy tones by lowering the volume of the therapy tones to zero. The app is not free, but does offer a one-week trial period. After that, you have to pay once for unlimited use or you can start a subscription.
Required Android Versions : Jelly Bean [4.1–4.3.1] - KitKat [4.4–4.4.4] - Lollipop [5.0–5.0.2] - Marshmallow [6.0 - 6.0.1] - Nougat [7.0 – 7.1.1] - Oreo [8.0-8.1]