Delivers what it promises – Volume Master - Dial in the sound of your music player with a control booster Review

I bought this because my new pair of Bluetooth earphones remains mute on iPhone's notch 1 and is too loud on notch 2 for use in quiet environments. I hoped this could sidestep that by scaling down the volume. This app did scale iPhone's volume as promised, but the earpieces still did not play anything below a certain level. So although my issue remains unresolved, that is the fault of the BT's, not this app. This does fine tune the volume to quieter-than-notch-1 play when I tried it with default apple earphones, which is cool. (Trust me - I have hyperacusis. I could hear this on .01% volume and it's legit.) For that I conclude this app does deliver what it promises.
Review by Fonx on Volume Master - Dial in the sound of your music player with a control booster.