Welcome to "Deliver for Amazon Flex - A Guide for Newbies." Take your first steps to becoming an Amazon Flex Delivery Partner. This free guide will prove to be. Sign up today and see if Amazon Flex is operating in your area. Users' Rating. These reviews and ratings come from Aptoide app users. To leave your own, please. How do I re-download the app? For iPhone. Download the Amazon Flex app in. Amazon Flex might be a better option for you than working with Uber, Lyft, or other rideshare apps. Get ready to work, as you can be responsible for up to 30 or more packages per block. You like to drive, have some spare time and need to make some extra cash. Fill out your availability and your banking information for direct deposit. To register: Answer amazon flex app questions on the Flex website. Another thing is that the app always crashes which causes you to keep amazon flex app back into the app even with the new updates.