SmartVolume

SmartVolume is a useful app that helps you in improving the sound experience of your phone or tablet.
Pre-set the desired volumes for high-speed and low-speed, respectively; the music volume is adjusted automatically as the car speed changes.
The app is perfect for people who want to increase the music level of their phones.
It's a MUST item for drivers who enjoy music while driving. And it is cheap, too! Try it now!

Its compatible with all top music players.