What is Product-Market Fit
Marc Andreessen defined it as "being in a good market with a product that can satisfy that market." It's the moment when your product sells itself and users grow organically.
The Sean Ellis magic question
Ask your users: "How would you feel if you could no longer use this product?" If more than 40% answer "very disappointed," you have PMF. This metric directly correlates with sustainable growth.
Qualitative PMF signals
Users who recommend your product unprompted. Complaints when something breaks (if they don't complain, they don't use it). Organic growth in signups. Time spent increasing week over week.
Complementary quantitative metrics
Weekly retention rate >60%, activation rate >40%, NPS >40, monthly churn <3%. These concrete numbers indicate your product is generating real value.
What to do if you don't have PMF
Don't invest in growth. Go back to research, talk to users, iterate your value proposition, or change your segment. Growth without PMF only accelerates failure.
The roadmap to PMF
Define your ideal user, identify their main problem, build the simplest possible solution, measure retention, and repeat until 40% say "very disappointed."
At Vynta we help startups find Product-Market Fit through discovery and experimentation processes. Contact us to accelerate your journey.