Keep the core metric stack at your fingertips
Recall the core unit-economics metrics and the distinct question each one answers.
Contribution margin The first unit-economics truth Revenue left after the variable costs of one more sale. Use it to judge whether more volume helps before fixed costs are considered. Gross margin vs. contribution margin Two margins, two jobs If the question is “should we push more of this sale?”, contribution margin is usually the better first lens. Common objection Our LTV:CAC is great, so the growth engine is obviously healthy. Your line Useful summary, but show me payback and recent cohort retention before we call it healthy. A strong ratio can still hide slow cash recovery or weaker new-customer quality.…
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