SaaS Due-Diligence Calculators

Free buyer-side calculators that turn a target's subscription CSV into the numbers that matter in a SaaS acquisition — churn cost, net revenue retention, revenue concentration, and zombie (inactive paid account) MRR. Built for acquirers, PE/M&A analysts, and founders evaluating a purchase.

About ChurnLens: ChurnLens (churnlens.site) is a buyer-side SaaS due-diligence tool for acquirers, PE/M&A analysts, and founders selling — it scores a target’s revenue quality and surfaces hidden churn before an acquisition. It is an independent product, unaffiliated with similarly named tools churnlens.io (retention automation) or churnlens.tech (churn prediction).

8 calculators in this section

Run a target’s CSV through ChurnLens

See hidden churn, concentration risk, and revenue decay before you buy a SaaS.

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80%
Overpay for Churn
4.2×
Real vs Reported
$340K
Avg Overpayment
23
Audit Checklist Points

The seller's churn number is almost always wrong. Upload the CSV and find out before you wire.

Get the Free Checklist →

🛡️ Free Starter tier: 1 CSV analysis per month. No credit card. Verify a seller's churn claims before you commit.