There’s no app to control the EQ, just the bodily controls together with a Bluetooth be part of button, an affect/quantity knob and two for bass and treble. Once powered on, you need to utilize the amount knob to established a max headroom and modify quantity over the fly https://www.bluetoothspeaker.top/hifi-sound-quality-support-hands-free-call-waterproof-wireless-bluetooth-speaker/