The K-Factor measures how quickly a product spreads through user referrals. It calculates how many new users each existing user generates. A K-Factor above 1 indicates viral growth, while below 1 means growth stabilizes or declines. SaaS and mobile apps use this metric to evaluate referral programs, viral loops, and user acquisition strategies. High K-Factor products typically leverage strong incentives and seamless sharing mechanisms.
Glossary · K
K-Factor
A metric used in viral marketing to measure how many additional users each existing user brings to a product or service.
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