NPS vs PMF: Measuring Loyalty vs Product-Market Fit
Compare Net Promoter Score with the Sean Ellis PMF test. Both measure customer sentiment but answer different strategic questions.
Quick Verdict
NPS measures ongoing loyalty and predicts referral behavior. PMF answers a binary question: should you invest in growth or go back to discovery? Track both, but PMF is the higher-stakes metric for early-stage products.
Use NPS when you have an established product and want to track customer loyalty trends over time, set retention OKRs, and benchmark against industry standards.
Use the PMF calculator when you need to determine whether your product has enough customer pull to justify scaling investment — particularly before fundraising or major growth pushes.
Side-by-Side Comparison
| Attribute | 📊NPS Calculator | 🎯PMF Calculator |
|---|---|---|
| Category | Customer Health | Customer Health |
| Complexity | Quick | Quick |
| Best For | IC PM, Senior PM, Head of Product, VP Product, CPO | IC PM, Senior PM, Head of Product, VP Product, CPO |
| Use Cases | Measure Health | Measure Health, Plan Strategy |
| What You Enter | Number of promoters (9-10), passives (7-8), and detractors (0-6) | Survey response counts: very disappointed, somewhat disappointed, not disappointed |
| What You Get | NPS score (-100 to 100), benchmark comparison, health assessment | PMF percentage, pass/fail assessment, stage-specific recommendations |
| Leadership Use Case | Benchmark customer loyalty against industry standards and track trends over time. | Determine if you should invest in growth or return to discovery. |
Comparison
NPS Calculator
QuickPMF Calculator
QuickDetailed Breakdown
NPS Calculator
QuickNet Promoter Score is the gold standard for measuring customer loyalty and predicting growth. This calculator takes your survey responses, computes your NPS, and benchmarks it against SaaS industry averages by company stage and segment. Product leaders use NPS to track satisfaction trends, set customer health OKRs, and build the case for retention investments.
IC PM, Senior PM, Head of Product, VP Product, CPO
Benchmark customer loyalty against industry standards and track trends over time.
PMF Calculator
QuickThe Sean Ellis test asks users how they would feel if they could no longer use your product. If 40% or more say "very disappointed," you have product-market fit. Product leaders use this metric to determine whether to double down on growth or pivot back to discovery. This calculator gives you the PMF percentage plus actionable guidance based on where you fall on the spectrum.
IC PM, Senior PM, Head of Product, VP Product, CPO
Determine if you should invest in growth or return to discovery.
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