If there is little information available about the company behind the app, it's likely a fake Refer Earn app. It's possible for phony apps to have a limited online presence, ambiguous or missing contactrummy.ola information, or no recognizable business address. The authenticity of the app and its referral scheme are called into question by this lack of transparency. Unrealistic incentives or rewards promised is another telltale sign of a fraudulent Refer Earn app. Users may be drawn in by fraudulent applications by lavish claims of cash rewards, gift cards, or other benefits that appear too good to be true.