I like it
I have to use hearing aids and I can no longer rely on my volume indicator on the TV to tell me how "loud" the TV is. One station may provide adequate volume for me at an indicator of 35, another may need to be set at 49. A small difference for me may be a huge difference for my wife. This app lets me set the volume to the dB my wife has picked as "non-annoying".
Colorado Woodbutcher about
Decibel X:dB Sound Level Meter, v5.0.0