Refer and earn apps are mobile applications that incentivize users to promote the app to their social network. Some apps have a referral system that pays users in points, moneall slotsy, or other rewards for successfully introducing new users who download and use the app. Typically, the process entails users sharing a special link with others, and the referrer gets rewarded when the recipients sign up and fulfill certain requirements. Businesses use this marketing tactic to grow their user base & raise awareness of their brand.