I had high hopes for this app because I respect the efforts of the designer and his equipment, but I was sorely disappointed to find that this app just doesn’t work, in my experience. It goes crazy no matter what the setting even though I have a Mel Meter and it wasn’t registering anything at the same time. I also found that the readings would always increase when shifting from the vertical position to the horizontal and decrease when returning my phone to the original position even though I purposely moved slowly and did not alter the position of my phone relative to its starting point. Even though I would rack up dozens of photos there was never an indication of any photo evidence and, yet, the Mel Meter was calm. I know this is listed as being for “entertainment purposes”, but I sure haven’t received my $1.99 worth of entertainment. Lol My feeling is that this is a good idea, but the app needs a lot of work to make anymore than as a novelty.