Guides growth using the AARRR framework (Pirate Metrics)—five stages of the customer lifecycle. Created by Dave McClure (500 Startups) to focus on actionable metrics over vanity metrics. Use this skill when diagnosing growth bottlenecks, prioritizing improvements, or aligning product, marketing, and customer success.
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AARRR Framework
Stage
Question
Key metrics
Acquisition
How do users discover you?
CAC, CPA, conversion by source
Activation
Do users reach "aha moment"?
Activation rate, time-to-first-value
Retention
Do users return?
D1/D7/D30 retention, churn
Referral
Do users recommend?
Referral rate, NPS, viral coefficient
Revenue
Do users pay?
Conversion rate, ARPU, LTV
Principle
Define behavior-based events per stage; analyze by cohort. Quality over volume—channels bringing fewer but more activated users often outperform.
Per-Stage Actions
Stage
Actions