Mobile User Engagement Glossary | Storyly

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What is k-factor?

K-factor is a metric for mobile app developers that tells you how viral or popular your app is, by measuring the number of additional users that are brought in by your existing users. 

In literal terms, K-factor is used to as a metric in medical sector to indicate how quickly a virus can spread within a certain period of time.

This metric can come in quite handy while calculating the overall growth of a mobile app in terms of user base. It also provides useful insights into the incentives that your current users have to share the mobile app within their social circle (friends, family, colleagues, etc.). For app developers and marketers, it is imperative to keep a mobile app easy to share with some sort of meaning or purpose for sharing it with another individual.