Measure what matters.
Ignore the rest.
Essays and field notes on product-market fit, customer measurement, and building things people would genuinely miss.
PMF vs NPS: The Difference (and Why You Need Both)
PMF and NPS look similar but measure different things. Here's what each one tells you, when to use each, and why most NPS tools can't measure PMF.
Survicate Alternative for PMF Measurement (2026)
Survicate has a real product/market fit survey template, but its documentation describes no automatically calculated PMF score. Here is what it does and does not do for PMF measurement as of July 2026, and when a dedicated PMF tool is the better fit.
The 7 Product-Market Fit Survey Questions FitSignal Uses
A PMF survey score comes from one question. FitSignal asks seven to explain the score, identify the right users, and turn feedback into roadmap decisions.
Delighted Shut Down: What to Do With Your Exported Data
Delighted shut down on June 30, 2026. If you exported your data, here is how to preserve the raw files, document what is missing, and plan your next measurement setup.
7 Best Delighted Alternatives for 2026 (Free and Paid)
Seven current options for teams replacing Delighted after its June 30, 2026 shutdown, including PMF-focused, NPS-focused, and low-cost survey tools.
What Is Product-Market Fit and How Do You Measure It?
How the disappointment survey gives you a repeatable way to measure whether your product has found its market, what the 40% benchmark really rests on, and what the number cannot tell you.
High Expectation Customers (HXC): What They Are and How They Shape PMF
Julie Supan's High Expectation Customer is the most discerning person in your target market, not the most demanding user in your database. That distinction changes how you read a product-market fit survey, and what you build next.
How to Know If You Have Product Market Fit (2026 Guide)
Getting product-market fit is crucial, and one key indicator is when over 40% of your core users would be 'very disappointed' if your product vanished. You've built ...
The "Very Disappointed" Survey Question: What It Means
"Very disappointed" is the only PMF survey response that matters. Users who say they'd be "very disappointed" if your product disappeared are your core PMF...
How to Improve Your Product Market Fit Score
If your score is below 40%, two moves matter most: find the segment that already values you, and remove the specific blockers holding back the users who almost do.
The Sean Ellis 40% Test: The Ultimate Guide
The Sean Ellis 40% test is the most validated method for measuring product-market fit. Ask your users "How would you feel if you could no longer use...
Product Market Fit for SaaS: A Practical Guide to Measuring It
Product-market fit for a SaaS product is repeatable, durable alignment between your product, a segment you can name, and a job that segment actually needs done. Here is how to measure it with the disappointment survey and the metrics you already have, without inventing benchmarks that do not exist.