What is Product-Market Fit?

What is Product-Market Fit?

Product-market fit (PMF) means you've built something people want. It's when your product satisfies a strong market demand and users can't imagine going back to life without it.

How Do You Know You Have PMF?

Marc Andreessen's Definition

"Product-market fit means being in a good market with a product that can satisfy that market."

The Feeling

• Customers are coming to you
• You can't keep up with demand
• Usage is growing organically
• People refer others without being asked
• Revenue grows without proportional marketing spend

Signs You DON'T Have PMF

• High churn rate
• Users sign up but don't return
• Hard to get customers
• Lots of "nice to have" feedback
• No word-of-mouth growth
• You're pushing, not being pulled

Signs You DO Have PMF

• Users would be "very disappointed" without your product
• Strong word-of-mouth
• Retention is high
• Users pay without heavy discounting
• Feature requests are enhancements, not pivots

Measuring Product-Market Fit

The Sean Ellis Test

Ask users: "How would you feel if you could no longer use [product]?"

• Very disappointed
• Somewhat disappointed
• Not disappointed

Benchmark: 40%+ saying "very disappointed" = PMF

Retention Curves

If your retention curve flattens (doesn't go to zero), you have some level of PMF.

NPS Score

Net Promoter Score above 40 indicates strong PMF.

Before vs After PMF

Before PMF

• Focus on learning
• Talk to users constantly
• Iterate rapidly
• Don't scale
• Keep team small
• Spend little on marketing

After PMF

• Focus on scaling
• Build team
• Invest in marketing
• Optimize operations
• Raise funding (if needed)

Common Mistakes

Thinking You Have PMF When You Don't

• Early adopters ≠ mainstream market
• Friends using it ≠ PMF
• One big customer ≠ PMF

Scaling Before PMF

• Hiring too fast
• Spending on marketing
• Building features before core value is proven

Finding Product-Market Fit

The Process

1. Identify a problem worth solving
2. Build minimum viable solution
3. Get it to real users
4. Measure engagement and retention
5. Iterate based on feedback
6. Repeat until PMF signals appear

With Spawned

• Build fast with AI
• Launch to built-in discovery
• Get real user feedback
• Iterate quickly
• Community features encourage honest feedback

Key Takeaways

1. PMF = people want what you've built
2. 40%+ "very disappointed" = strong PMF
3. Focus on finding PMF before scaling
4. It's a feeling: pulled vs pushed
5. Most startups fail because they never find it