SaaS Cohort Retention & LTV Curve Visualizer

A monthly churn rate that sounds small compounds into a retention curve that isn't. See exactly how a single cohort decays, and how lifetime value actually builds against that decay.

Reading This Tool

How To Use This Visualizer

Enter monthly churn, ARPU, and gross margin for a single customer cohort.

The chart tracks that cohort's retention curve and its cumulative lifetime value built up over 36 months. Compare the shape against the asymptotic LTV a churn rate implies if it held forever.

Your Inputs

Monthly Churn Rate 3.0%

Monthly ARPU $100

Gross Margin 75.0%

Customer Acquisition Cost $400

This models a single cohort's average behaviour with a constant monthly churn rate. Real cohorts typically show declining churn over time as the customer base matures, this simplified constant-churn model is a common, conservative starting point.

36-Month Cohort Outcome

LTV:CAC Ratio (36-Month)

0.0x

Retention At Month 12

CAC Payback Period

Cumulative LTV Build-Up, Month By Month

A widely-cited benchmark targets an LTV:CAC ratio of 3:1 or higher with a CAC payback under 12 months, though the right target varies by business model, growth stage, and available capital.

Want the full SaaS metrics picture, not just LTV?

Open The SaaS LTV/CAC Diagnostic →