In addition, the app has a sound revenue stream & business plan that enable it to award users with rewards without requesting payment information or sensitive personal data up front. On the other hand, in a case study of a fraudulent refer-earn app called "App B," users are promised substantial rewardwhich ram slots to uses but are not given clear instructions on how to really earn those rewards through the referral program. Due to the large number of unfavorable reviews left by users who have not received their promised rewards, the app has a bad reputation. To take part in the referral program, users of App B must submit sensitive personal information or payment details up front. This information could be used fraudulently or sold to third parties for profit. Also, users of the app are unaware of how their personal data is being used because it lacks customer support & has a vague or nonexistent privacy policy.