The Crimson Bench

ProRevenue · Simulator

Cohort Retention & LTV Simulator

Watch one cohort decay — and see its true lifetime value.

Assumptions

Retained at 12mo

57%

LTV / customer

$368

Cohort value (12mo)

$36,771

MonthActiveMargin RevenueCumulative
Month 295$3,800$7,800
Month 486$3,429$14,840
Month 677$3,095$21,193
Month 870$2,793$26,926
Month 1063$2,521$32,101
Month 1257$2,275$36,771

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Built by The Crimson Bench · Educational model, not financial advice

About the Cohort Retention & LTV Simulator

Track a single customer cohort month by month as churn erodes it, and see cumulative revenue and lifetime value per customer. The honest way to value a customer.

It's built for directional planning: change any assumption and watch the whole projection move, the way a seasoned operator pressure-tests a plan before committing capital. Everything is computed live in your browser — nothing is sent anywhere.

How the Cohort Retention & LTV Simulator Works

The model takes 4 assumptions and returns 3 headline metrics plus a full breakdown. Here is exactly what goes in and what comes out — no black box.

The Inputs

AssumptionExample value
Cohort size100
Monthly revenue / customer$50
Gross margin80%
Monthly churn5%

Worked Example

Every figure below is produced by the live model using the example assumptions above. Change any input in the simulator to see your own numbers.

Retained at 12mo

57%

LTV / customer

$368

Cohort value (12mo)

$36,771

MonthActiveMargin RevenueCumulative
Month 295$3,800$7,800
Month 486$3,429$14,840
Month 677$3,095$21,193
Month 870$2,793$26,926
Month 1063$2,521$32,101
Month 1257$2,275$36,771

The Operator's Read

Each customer is worth about $368 in the first year. Churn is the lever — halving it roughly doubles this without a single new sale.

Assumptions & Limitations

  • The model is deterministic: it projects your inputs forward with clear arithmetic, not a Monte-Carlo or probabilistic forecast. It shows one scenario at a time — run several to bracket a range.
  • Defaults are illustrative benchmarks, not your business. Replace every field with your real numbers before drawing conclusions.
  • It abstracts away taxes, financing, seasonality, and one-off events unless a field explicitly captures them. Treat the output as a directional estimate.
  • This is an educational tool, not financial, investment, tax, or legal advice. Validate real decisions with a qualified professional.

Frequently Asked Questions

What does the Cohort Retention & LTV Simulator calculate?

Track a single customer cohort month by month as churn erodes it, and see cumulative revenue and lifetime value per customer. The honest way to value a customer. It takes 4 assumptions — Cohort size, Monthly revenue / customer, Gross margin, Monthly churn — and returns Retained at 12mo, LTV / customer, Cohort value (12mo), along with a full projection table you can export.

How do I use the Cohort Retention & LTV Simulator?

Enter your own figures in the input fields above — Cohort size, Monthly revenue / customer, Gross margin, and the rest. The model recalculates instantly and shows the resulting Retained at 12mo and full breakdown. No sign-up needed to run it.

Is the Cohort Retention & LTV Simulator free?

Yes — you can run the simulator and see the headline results for free. Toolkit Pro unlocks the full projection table, Excel/PDF export, saved scenarios, and AI analysis: $180/mo, $1,728/yr, or unlock any 3 simulators for $20.

What's the difference between this and a free calculator?

A calculator answers one question. This simulator models the full picture — multiple linked assumptions, a projection table, and scenario comparison — the way an operator would build it in a spreadsheet, but instantly.

Who built the Cohort Retention & LTV Simulator?

The Crimson Bench's Ivy League-educated operators — the same people we deploy into C-suites. This is the self-serve version of a model they'd build inside a live engagement.

Is this financial advice?

No. The Cohort Retention & LTV Simulator is an educational modeling tool for directional planning — not financial, investment, tax, or legal advice. Validate any real decision with a qualified professional.

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The Crimson Bench · Est. 2002 · Founded in New York City

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