ExtraVolumeConfig(Fine-tuning) is a free personalization application developed by Keshigoto for Android devices. It is an application that allows users to fine-tune the volume of their device to their desired level. The app offers a simulated volume that does not exist originally, allowing users to lower or increase the volume beyond the device's default settings. It is compatible with non-root terminals and can be used to control the sound of all audio output from the device, including speech voice, shutter sound, and notification sound.

The app has basic volume control settings and a main function that offers expansion volume control settings. It also has functions to turn off advanced settings automatically during a call, a shortcut to display settings in the notification bar, and a setting screen display function that does not require screen transition. ExtraVolumeConfig(Fine-tuning) has been confirmed to work on Galaxy S2 and Nexus7 devices.