There is an app you can use with the SoundLink Max, but it's actually not required. If you need to do use it, you'll get access to EQing, speaker customization choices, and firmware updates. From 2006 to 2018 Derek was the editor-in-chief of Canadian tech and enjoyment magazine Connected, https://www.bluetoothspeaker.top/factory-price-inalambrico-speaker-bt-5-0-speaker-with-led-fm-radio/