A mobile app that offers incentives for users to share it with their social network is known as a refer-and-earn app. Usually, these apps give users a indian bingo slotsspecial code or link that they can share with others. A reward, which could be points, money, or discounts, is given to the original user who signed up using this referral information. Refer-and-earn apps are a marketing tactic used by businesses to increase user numbers & advertise goods & services.