Best PromptsUnit Economics Diagnostic
Compute your real unit economics (CAC, LTV, payback period) from raw inputs: formulas shown, benchmarks labeled as heuristics, and the two levers that matter most.
Diagnose my unit economics from the numbers below.
My numbers:
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[PASTE WHAT YOU HAVE:
- Pricing: plans/prices and mix if known
- Acquisition: monthly marketing+sales spend, new customers per month (by channel if known)
- Retention: monthly or annual churn %, or "average customer stays ~N months"
- Costs to serve: hosting/support/COGS per customer, or gross margin % if known]
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Business model: [SAAS / ECOMMERCE / SERVICES / MARKETPLACE]
What prompted this: [THE WORRY OR DECISION, e.g. "ads feel expensive", "deciding whether to raise prices"]
Compute, showing the formula and arithmetic for each:
1. **CAC**: blended, and per-channel if my data allows. State what's included; if my spend number omits salaries or tools, note that real CAC is higher.
2. **Gross margin per customer**: revenue minus cost-to-serve, monthly.
3. **LTV**: state the formula you're using and why (margin × avg lifetime from churn), and flag its fragility: small churn changes swing LTV wildly, so show LTV at my churn rate ± 1 point.
4. **LTV:CAC and payback period**: months of gross margin to recover CAC.
5. **Verdict**: healthy / concerning / broken, against common heuristics (LTV:CAC ~3+, payback under ~12 months for SaaS); labeled clearly as rough heuristics whose applicability depends on my capital and model, not laws.
6. **The two levers**: of price, churn, CAC, and cost-to-serve: which two changes would improve the picture most for MY numbers, each quantified ("cutting churn 5%→4% adds $X to LTV: more than a 10% price raise").
7. **What would sharpen this**: the data I didn't provide that most changes the answer (usually cohort retention curves vs. a flat churn %), and the risk of trusting averages: one big customer or one great cohort can hide a broken core.
Rules: compute only from my numbers; where you must assume, state the assumption inline and mark it. Show enough arithmetic that I can audit every figure.More business prompts
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