Waste of money!
Their discription here and on their website specifically states. "It amplifies too quiet audio and decreases volume of too loud files or their parts automatically.”
I tried this app on a single two person recorded interview MP3 file where the interviewer’s voice was too “quiet” and the person being interviewed spoke too “loud”.
This app made no modification what so ever to the file I was trying to “normalize” the volume level on.
I suggest you try the trial app at their website before spending any money here.
Waste of money and time and I atleast want my money back.
Thank You, dD...
d..D… about MP3 Normalizer