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Direct Answer
Sean Ellis Test: >40% 'very disappointed' (Superhuman: 58%, Slack: 51%). Quick Ratio >4.0 indicates sustainable growth. Pre-PMF churn: 8.2% monthly; post-PMF (<$50M+ ARR): 1.9%.
Quick Facts
- 40%+
- Sean Ellis threshold — PMF Framework
- >4.0
- Quick Ratio for PMF — Amplitude 2026
- 8.2%
- pre-PMF monthly churn — SaaS Benchmark 2025
- 2-3 yrs
- average time to PMF — Startup Genome
Measure PMF using multiple metrics: Sean Ellis test (>40% 'very disappointed'—Superhuman hit 58%, Slack 51%), retention curves (B2C: flatten at 20-25% after 6 months, B2B SaaS: 70-80% after 12 months), Quick Ratio >4.0 (new+resurrected/churned), NPS >30 for B2B/>50 for B2C, DAU/MAU >25%, and organic growth >50%. Pre-PMF startups (<$1M ARR) see 8.2% monthly churn, dropping to 1.9% for established companies ($50M+ ARR). Average time to true PMF: 2-3 years.
Key Measure Product Market Fit Takeaways
- Sean Ellis Test: >40% 'very disappointed' (Superhuman: 58%)
- Retention: B2C flatten 20-25% (6mo), B2B SaaS 70-80% (12mo)
- Quick Ratio: >4.0 indicates sustainable growth engine
- Pre-PMF churn (<$1M ARR): 8.2% monthly
- Post-PMF churn ($50M+ ARR): 1.9% monthly
- Average time to true PMF: 2-3 years
Related concepts: pmf metrics, sean ellis test, retention curves, nps score, product market fit measurement, pmf indicators, dau mau ratio, churn rate, customer retention, engagement metrics.
Sources & Citations
- [1]PMF Framework
- [2]Amplitude 2026
- [3]SaaS Benchmark 2025
- [4]Startup Genome
Cite this page
IdeaProof. (2026). How to Measure Product-Market Fit?. IdeaProof. Retrieved from https://ideaproof.io/questions/measure-product-market-fitLast verified: