Bluetooth Equalizer Booster increase speaker and headphone loudness and the music volume of your mobile phone. It is a simple sound amplifier and music player booster that makes your phone extra louder. You can also use it during a voice call to increase the audio level so you can hear better.

Volume Booster and airpod Booster can enhance the volume of sound not only in headphones and earphones, but also it can make speaker louder. But for a better effect and better sounding we recommend you to use headphones and airpods.
Bluetooth Equalizer Booster Improve Your listening experience with Bluetooth Headphones Volume Booster tool.
this app work with Spotify,youtube music and some other music player as well .