Unit economics
Do your customers actually make money? These free calculators check LTV:CAC, CAC payback and churn against healthy ranges for early-stage SaaS — so you know whether each customer is worth more than it costs to acquire and keep.
LTV:CAC Calculator
Is each customer worth more than they cost?
CAC Payback Calculator
How long until a customer pays back what they cost?
Churn Calculator
How much of my revenue am I losing each month?
Ready for the full picture?
Each tool checks ONE number. The Viability Model runs them into one default-alive verdict, with benchmarks, scenarios, a cap table and a PDF.