Alexa App plays an important role in setting up Alexa and Echo Dot Setup. Without Alexa App, we can not use Echo Dot and Alexa devices. So firstly you need to Download Alexa App from alexa amazon com or you can download the Alexa App from your device google play store and App store for Alexa Setup and Echo Dot Setup. If you want to get all information for download Alexa App then you can visit here alexa amazon com or https://www.downloadalexaappsetup.com