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ChurnLens for SaaS Acquirers answers one question: is this subscription revenue real? — not "what the seller says" real, but "will it still be here in 12 months" real. Send a raw subscription CSV and get a complete buyer-side risk report — logo churn, revenue churn, HHI concentration, annual renewal cliff analysis, and a 0–100 Revenue Quality Score — in 2 business days, not days. Built specifically for SaaS buyers, not sellers.

TL;DR

ChurnLens replaces days of manual spreadsheet due diligence with a single CSV upload. It computes logo churn, revenue churn, HHI concentration, annual renewal cliff risk, and a 0-100 Revenue Quality Score — benchmarked against 14 SaaS verticals. Built for micro-acquirers, search funds, and PE analysts evaluating SaaS acquisition targets.

Who Uses ChurnLens?

What the Risk Report Includes

Logo Churn Analysis

Monthly and annual logo churn computed from raw CSV data — not the seller's "adjusted" number. Benchmarked against 14 SaaS industry verticals.

Revenue Churn Analysis

Revenue-weighted churn showing the actual MRR impact of departures. Catches the divergence between logo churn and revenue churn that hides concentration risk.

Concentration Risk (HHI)

Automatic HHI calculation with whale-customer flags for any account above 5% of MRR. Shows top-10 customer concentration and renewal exposure.

Annual Plan Risk

Maps the renewal calendar — shows how much MRR is exposed each month and flags renewal cliffs where multiple contracts expire simultaneously.

Inactive Account Detection

Identifies zombie MRR — customers still paying but not engaging. Quantifies ghost revenue that will vanish within months.

Revenue Quality Score

A composite score weighting retention, concentration, engagement, and growth trends. See the methodology for details.

Start your due diligence

Send a subscription CSV and get a complete buyer-side risk report in 2 business days. Free to use during active due diligence.

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How It Works: Three Steps

  1. Request the CSV — Ask the seller for a subscription export. Minimum fields: customer ID, MRR or revenue, plan type, signup/contract date, account status. Optional but valuable: last activity date for zombie detection.
  2. Send to ChurnLens — Drop the CSV into the ChurnLens app. The analysis runs automatically — no spreadsheet work, no pivot tables, no manual calculations.
  3. Review the risk report — Get churn metrics, concentration scores, renewal maps, zombie MRR totals, and a revenue quality score. Use it to validate the seller's claims and negotiate from data.

What Data Do You Need?

The minimum viable CSV includes these columns:

Optional fields that improve analysis quality: last login/activity date, original plan (for upgrade/downgrade tracking), acquisition channel, and country/region.

Use Cases During Due Diligence

Related Resources

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Frequently Asked Questions

What is hidden churn in a SaaS acquisition?

Hidden churn is revenue decay that headline metrics conceal: customers on annual plans who have already stopped using the product, paid accounts sitting inactive, or revenue concentrated in a few logos about to leave. A SaaS business can show flat MRR while its real retention is collapsing. ChurnLens surfaces these signals before you buy, so you price the deal on true revenue quality.

How does ChurnLens score revenue quality?

ChurnLens analyzes five dimensions: revenue concentration, logo retention, annual-plan churn risk, inactive paid accounts, and MRR decline patterns. Each is weighted into a single 0-100 revenue-quality score benchmarked against comparable SaaS businesses. The score tells an acquirer whether reported MRR is durable or propped up by customers who are one renewal away from leaving, all before the deal closes.

Why do SaaS acquirers need due diligence on churn?

Purchase price is usually a multiple of recurring revenue, so overstated retention directly inflates what you pay. A business with 20% hidden annual-plan churn is worth far less than its MRR implies. Buyers who skip churn diligence discover the decay only after closing, when it is too late to renegotiate. ChurnLens gives that visibility during the evaluation window instead.

What red flags should I check before buying a SaaS business?

Watch for revenue concentrated in a handful of accounts, a widening gap between signups and active users, annual contracts that never renew, and MRR that grows only through discounting. Each pattern signals fragile revenue. ChurnLens automatically flags these red flags from uploaded revenue data and ranks them by how much they threaten the durability of the recurring revenue base.

Key facts
Risk dimensions scored5
Revenue-quality score range0-100
Built forAcquirers, PE, founders

Key terms, defined

Revenue concentration
The share of total revenue coming from the largest customers — high concentration is a churn and valuation risk.
Logo retention
The percentage of customers (logos) retained over a period, independent of expansion revenue.
Net revenue retention (NRR)
Revenue retained from existing customers including expansion and contraction, expressed as a percentage.

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9%
Median B2B SaaS revenue churn
88%
Median gross revenue retention
23
Audit Checklist Points

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

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

· · Published 2026-01-15