Also, Ludo Supreme is a gaming app that lets users play ludo while earning real money. It also has a referral program that pays users for introducing new all rummyfriends to the game. A well-liked app is 4Fun, a platform for short videos that lets users make and share videos while earning incentives, such as through a referral scheme. These are but a handful of the numerous refer & earn apps that don't require KYC and provide users with enticing incentives.