Inputs
Revenue per customer, gross margin, service cost, customer lifetime, media CAC, sales CAC, onboarding cost, fixed cost, customer volume and target LTV/CAC.
APIS LAB / Tool
Acquisition economics
Check whether the model really works after gross margin, service cost, sales cost and onboarding are included — and see how scale pressure changes the result.
How to read the result
Workspace
Enter the inputs and the model will show both the result and its reliability
The result will appear here.
Check the units, periods and definitions before running the calculation. Weak input data produces weak conclusions.
Method
A tool is useful only when you can see what the conclusion rests on
The interface is only the front layer. The real value is the ability to inspect the inputs, understand how the output is calculated, recognise what the model cannot know and translate the result into a management action.
Calculation method
The model calculates monthly gross profit, full CAC, gross-profit LTV, payback, allowable CAC, break-even volume and sensitivity scenarios.
Limitations
Lifetime and margin are assumptions unless supported by cohort data. The model does not predict retention or future CAC and should not be treated as a valuation.
Management output
A clear scale / verify / stop signal plus the assumptions that most threaten the economics and should be checked against real cohorts.
APIS LAB principle
A result is complete not when a chart appears, but when it becomes clear which decision follows, which assumptions remain disputed and what next evidence could change the conclusion.
Method