Across a wide range of industries, there are numerous well-known refer and earn apps that each provide special incentives & rewards for referrals. A well-knownrummy nabob all game refer and earn app in the e-commerce industry is Amazon's "Refer and Earn" program, which gives users cash incentives for introducing friends to Amazon.com. Comparably, SHEIN, an online fashion retailer, has a refer & earn program that gives users discounts on their purchases in exchange for referring new clients.