Pirate Metrics (AARRR)

Pirate Metrics is a 5-stage framework for measuring a startup's growth: Acquisition (how people find you), Activation (their first good experience), Retention (do they come back?), Referral (do they tell others?), and Revenue (do you make money?). Breaking growth down into AARRR helps marketers identify exactly where the funnel is broken. For example, if acquisition is high but activation is low, you don't need more ads—you need to fix your onboarding process.