Do I have to use the app? December 18, 2020 21:18 Updated Yes, the only way to apply and stay on track with payments is by using the Flex app. You can download the Flex app HERE. Related articles What is an online rent portal? Where do I sign up for Flex? I’m not sure if I completed signing up, how do I know? What banks does Flex work with? I was approved for Flex, now what? Comments 1 comment Sort by Date Votes Sara Duran February 06, 2021 02:32 I dont think I need this. Thought it was like rent a center. Sorry 0 Comment actions Permalink Please sign in to leave a comment.