Unit economics in four inputs.
Enter ARPA, margin, churn, and CAC to get LTV, LTV:CAC, and CAC payback — each colour-coded against the benchmarks founders live by. Plus a twelve-month MRR and ARR projection.
Unit economics
Revenue left after cost of serving the customer.
Share of customers lost each month.
Avg. customer lifetime
33.3 mo
2.8 years
LTV
$1,333
Lifetime gross profit / customer
LTV : CAC
7.4×
Healthy — 3× or better
CAC payback
4.5 mo
Fast — under 12 months
Growth snapshot
New + expansion MRR, minus churned MRR.
ARR today
$300,000
MRR × 12
MRR in 12 months
$62,954
at 8% / mo
ARR in 12 months
$755,451
New ARR added
$455,451
Over the next year
Estimates for planning only. Projections assume a constant growth rate and simple (non-cohorted) churn.
The numbers investors ask for
LTV, LTV:CAC, and CAC payback — computed from four inputs, with a plain read on whether each one is healthy.
Colour-coded health
Green, amber, red against the benchmarks founders actually use — 3× LTV:CAC, sub-12-month payback. Know where you stand at a glance.
Project the year ahead
Set current MRR and a net growth rate to see ARR today and where you land in twelve months. Everything updates instantly.