Volume Master - Dial in the sound of your music player with a control booster

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.

This app works the way it should. The people who claim it does nothing need to get their hearing checked. And no, I'm not a friend or paid by the developer. What it does is raise or lower the volume in FINE INCREMENTS. It's a great app because the standard iOS volume is either too soft or too loud. This app gives precise control over volume adjustments. So the volume change may not be completely noticeable to the untrained ear. That's the point! I suggest you put on some headphones and and really listen closely to the volume change. It's there! Bravo.

The volume down button on my iPhone 5 became less responsive over time until it completely stopped working. I used to remedy this by using earbuds with their own volume buttons, but after unplugging them, the phone would return to its full volume setting. Needless to say that was quite annoying but this app remedies that perfectly! I love how it shows the iOS volume adjustment display while adjusting volume on the app! Highly recommended!

The app does provide finer and more incremental volume control. Just look at the negative reviews-- why doesn't it make my iPhone louder? Why doesn't improve my bass? Why? Because the app doesn't promise to do that. It does what it promises to do. Relative to the one reviewer that commented they saw the iphone default volume slider and that this meant it did nothing, that's false. The slider shows whenever the volume changes in any increment.

I was able to hear the difference in volume on the built in iphone 4 speaker and on a wired headset, but not on my LG 730 Bluetooth headset, which was my goal. It has predefined increments that were unaltered by this app. However, I did have to turn off the Max Volume setting under Music and the iphone EQ setting to get this app to work. (I noticed that the EQ effected my Bluetooth headset. If this app could be altered to use the EQ to control volume increments, then it might have better results.)