Mobile apps that encourage users to share them on social media are known as refer & earn apps. When users successfully refer new users who sign up using their special referral link or code, they are rewardwhat is pci slotsed with cash, discounts, or gift cards. Upon successful sign-up, both the new user & the referrer usually receive a reward. These apps employ cost-effective and efficient word-of-mouth marketing strategies to grow their user base. Refer & earn applications can reach potential new users by taking advantage of their social connections, as people are more likely to trust recommendations from people they know.