Retention Driver

A retention driver is a behavior or attribute whose holders stay significantly longer than others; a clue to what keeps users.

A retention driver is found by comparing two groups' retention: those who did a certain behavior in the early days versus those who did not. If the first group clearly stays longer, that behavior is a candidate driver — say 'added a first friend' or 'completed a profile'. But here lurks lifecycle analysis's biggest trap: correlation is not causation. Maybe the behavior does not cause staying; both may be effects of a third thing (a motivated user both does it and stays). So a true driver is proven only by a controlled experiment, not raw correlation; you must deliberately guide users into the behavior and see whether retention rises. Once proven, a retention driver wires straight into onboarding: make what the loyal core does early easy and prominent for everyone.