A4 · Calculators · 4 tools
GTM Calculators
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4 calculators covering the core GTM economics metrics: contribution CAC payback scenarios, scenario LTV:CAC with explicit survival and horizon assumptions, Rule of 40 and Rule of X side-by-side, and a motion explorer that proposes candidates for local testing. All computation runs client-side — nothing is sent to any server.
A4 · Calculator
CAC Payback Period
Compare constant contribution payback and an explicit monthly cohort revenue scenario with matched acquisition costs and timing.
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A4 · Calculator LTV:CAC Ratio
Discounted contribution under explicit customer churn and horizon assumptions. Actual cohort LTV requires survival and contribution data.
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A4 · Calculator Rule of 40 / Rule of X
Compare descriptive growth and margin scores with an explicit Rule of X weight. Score conventions do not identify operating-policy effects.
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A4 · Tool GTM Motion Selector
Explore self-serve, assisted and hybrid candidates. Illustrative bands require local contribution, cost, capacity and buyer evidence.
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