Free tools
Free SaaS calculators for post-launch pre-revenue founders.
Five honest unit-economics calculators. No email gate. The same math the $49 Playbook walks you through, available to anyone who can type.
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Available calculators
How much gross profit does each customer produce before they churn? One formula. Three inputs.
How much revenue evaporates every month while you focus on acquisition? The number that gets retention on the roadmap.
Projection
Post-Launch Revenue Projector
Where does your MRR actually land in twelve months given your real churn and acquisition rate? See the curve.
CAC payback
CAC Payback Period Calculator
How many months of gross profit does it take a paid customer to pay back their acquisition cost? Below twelve, you can scale.
Pricing
Pricing Power Calculator
What happens to LTV, payback, and LTV-to-CAC if you raise your price 50 percent? Side-by-side answer.
Why these five
Every formula on these pages is canonical SaaS-finance math – the same lenses David Skok, Bessemer, and Tomasz Tunguz use when they look at a deal. Nothing here is proprietary UnlockSaaS IP. The calculators exist so you can run the numbers yourself, in your browser, with no email gate and no signup wall, the same way the $49 Playbook walks paid customers through them.
Common questions
Do these calculators require an email or signup?
No. All five calculators — lifetime value, churn cost, revenue projection, CAC payback, and pricing power — run entirely in your browser with no email gate, no signup wall, and no card. They use the same unit-economics math the $49 Playbook walks paid customers through, published free because utility earns links.
Which calculator should I start with?
Start with the LTV calculator if you already have paying customers, because lifetime value sets what every other number is allowed to cost. If you are pre-revenue, the revenue projector shows how growth and churn assumptions compound over time. The other three sharpen the same unit-economics model from different angles.