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measuring-product-market-fit

Assess product-market fit using retention analysis and Sean Ellis surveys.

1.2k|156|Updated Jan 29, 2026
Search Tags:#growth#retention#pmf#product-market-fit#customer-research#segment-analysis#sean-ellis-survey
One-click install
npx skills add https://github.com/RefoundAI/lenny-skills --skill measuring-product-market-fit-refoundai
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: measuring-product-market-fit
Source: https://github.com/RefoundAI/lenny-skills/tree/main/skills/measuring-product-market-fit
Command: npx skills add https://github.com/RefoundAI/lenny-skills --skill measuring-product-market-fit-refoundai

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

PMF is a moving target for product teams; this Skill helps teams determine if their product has achieved PMF and provides a framework to decide whether to persevere, pivot, or scale based on real signals.

Core Features & Use Cases

  • PMF assessment uses Sean Ellis survey results and retention curves to determine fit level and recommend actions for a range of products, with a typical example for early-stage SaaS before scaling.
  • Segment-focused validation evaluates PMF within targeted customer segments to identify where the fit is strongest.
  • Actionable guidance translates PMF findings into concrete next steps such as iteration, pivot, or go-to-market changes.

Quick Start

Run a PMF diagnostic by collecting retention signals and the Sean Ellis survey results for the current product.

Frequently Asked Questions about measuring-product-market-fit

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I measure product-market fit using the Sean Ellis survey?▼

To measure product-market fit with the Sean Ellis survey, you collect user responses to determine the percentage of users who would be very disappointed without your product, using a 40% threshold as a strong signal of PMF.

What signals indicate my product has achieved product-market fit?▼

Key signals of product-market fit include stable retention curves over time, a high percentage of very disappointed users in the Sean Ellis survey, and successful validation from reference customers within your target segment.

Can I assess product-market fit for a specific customer segment?▼

Yes, you can perform segment-focused validation to assess product-market fit within targeted customer segments, helping you identify exactly where the fit is strongest and where to focus your scaling efforts.

What should I do after collecting retention data and PMF survey results?▼

After collecting retention data and PMF survey results, you should analyze these signals to deliver actionable recommendations on whether to persevere, pivot, or scale your product.

Does this product-market fit assessment work for early-stage B2B SaaS?▼

Yes, this product-market fit assessment applies to early-stage products across both B2B and B2C contexts, specifically guiding pre-scaling decisions for early-stage SaaS through retention analysis and reference customer validation.

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