Active User Definition

An active user definition is the rule a team fixes for which action, within which time window, makes a person count as active.

Daily, weekly and monthly active users all sit on top of this one rule; until the rule is explicit, an active-user figure means nothing. A good definition is tied to the action that delivers the product's core value, such as publishing a post or placing an order, rather than merely opening the app. The most common error is comparing your number with another company's: two different definitions produce two numbers that cannot be compared.