Simply and easy to control volume of your device.
Control volume app. You can easy to control all kinds of volume for your device. And create a custom button to set the volume by your habit.
Feature:
(1) Notification: Create notification a message. You can pull down actionBar to set volume of music by click the volume button.
(2) Custom: Create a custom button to save the all kinds of audio types at present. And using long click to remove the button.