What problem does it solve? Determining whether a business model can profitably scale requires rigorous analysis of per-customer economics, but blended metrics, incomplete cost accounting, and unrealistic retention assumptions often produce misleading conclusions about growth readiness. ## Core Features & Use Cases - Fully-Loaded CAC and LTV Calculation: Computes customer acquisition cost including all sales and marketing costs, and lifetime value using cohort-based retention data rather than averages. - Cohort and Channel Analysis: Tracks retention curves, LTV, and payback by acquisition month, channel, and segment to identify profitable versus unprofitable growth sources. - Business Model Patterns: Provides tailored metrics, formulas, and benchmarks for SaaS subscription, e-commerce, marketplace, freemium, and enterprise sales models. - Use Case: A SaaS startup with $100/month subscriptions uses this Skill to calculate an 8:1 LTV/CAC ratio and 2.5-month payback, concluding it can aggressively scale marketing spend. ## Quick Start Analyze the unit economics of my SaaS business with $50 ARPU, 5% monthly churn, 80% gross margin, and $200 CAC, then tell me whether I should scale marketing spend.