Sometimes I have trouble hearing what people say, especially Americans on TV. And ladysolly has always suggested that I might be either deaf or stupid. So, in an effort to find out which, I downloaded the Specsavers hearing app.
I put on earphones, and it played me some talking, while in the background, there was noise. There were three tests with different kinds of noise, and I had to adjust the slider until I could just hear the talking. It's a nice, easy-to-use app.
The outcome was that my hearing is "normal".
Now what I need is an "Are you stupid?" app.