Apps that encourage users to share content on their social networks are known as refer & earn apps. Through referral programs, these apps give users a special code or link that they can share with others. Points, mreplication slots in postgresoney, discounts, or other incentives are given to the original user when new users sign up via their referral. Businesses from all different kinds of industries use this kind of marketing to get new users through word-of-mouth referrals. Users and businesses both gain from the refer and earn model. By sharing the app, users can earn rewards, and businesses can effectively acquire new clients through word-of-mouth marketing.