There is certainly an app You need to use with the SoundLink Max, but it's actually not mandatory. If you do use it, you will get access to EQing, speaker customization choices, and firmware updates. For many folks, the price in the Bluetooth speaker is what’s going to make https://www.bluetoothspeaker.top/popular-bluetooth-5-0-speaker-colorful-led-speaker-with-passive-radiator-bass-enhanced/