Article

Measure and improve product/market fit with the 40% test

Reforge Freemium Intermediate

This is a clean, practical writeup of the same 40% test methodology, with more detail on how to segment survey respondents after the fact to find your strongest fit customers. It's a good companion to the original Superhuman essay if you want the process spelled out as a checklist rather than a narrative. Useful once you already have the survey results in hand and need to know what to do with them; full detail may require a Reforge account.

  • Run the very disappointed survey question, then segment the responses immediately
  • Build for the segment that's already very disappointed, not the average respondent
  • Retest periodically since your PMF segment shifts as the product changes
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The question it answers

  1. How do I use the customers I already have to sharpen my ideal customer profile instead of guessing?

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