Referral Viral Loops Overview Word-of-mouth referral programs are one of the lowest-cost customer acquisition channels — referred customers have 37% higher retention rates and 25% higher LTV than non-referred customers. A dual-sided referral (reward both the referrer and the new customer) typically outperforms one-sided rewards by 2–3×. Dedicated referral apps (ReferralCandy, Friendbuy, Yotpo Loyalty) handle link generation, reward fulfillment, and fraud controls without custom code. When to Use This Skill - When CAC is high and word-of-mouth is underutilized - When existing customers frequen…