Fomo is a Shopify app that helps stores display recent sales, product reviews, and other customer behaviors. It integrates with over 100 other apps to showcase leads, discounts, live visitors, low-stock notifications, and more. Fomo can be used to show social proof through notification boxes or inline text placed throughout the store. Launched in 2014 under the name 'Notify', Fomo was named the #1 Black Friday/Cyber Monday app by the Shopify blog in 2017.