A free app for Android, by PeacefulBuddy.

Equalizer Buddy is an app that is used to calibrate the frequency response of your audio system. It supports a 20-band equalizer and a tone generator for earphones with multiple drivers. It has a simple and intuitive interface and can be used with most music players. It supports most music players and can be used with most Android devices.

The app has two modes that you can use to calibrate your audio system:

The first mode is the by frequency response curve. The second mode is the by tone generator.

You can choose from the 20-bands that are available in the app.

The app has two settings that you can use to customize the frequency response of your audio system:

The first setting is the target response curve.

The second setting is the band balance.

You can adjust the volume of each band in the audio system.

The app has an option to set a custom target response curve.