Most founders cannot pass the Solution Fit test. They think they can. They've built the product. They've shown it to people. People said nice things. But when an investor asks the real question, the wheels come off.
The real question is this: does your solution actually eliminate the pain you described, or does it just make the situation a little less annoying?
That's Solution Fit. The second of the 8 Fits.
Painkillers vs. Vitamins
Investors have a phrase for this. Painkillers get bought. Vitamins get cut from the budget the moment things get tight.
Here is what separates the two in a pitch meeting.
Founders with Solution Fit can name a real customer. They can describe that customer's life or business before the product. They can describe it after. The change is specific and measurable.
Founders without Solution Fit describe features. They show screenshots. They cite their cousin and two beta users who happen to be friends from college.
One of these founders gets a second meeting. The other gets a polite email three weeks later.
The Test
Can you tell the story of one customer whose life or business measurably changed because of your product?
If you cannot, you do not have Solution Fit. You have a product looking for a problem.
Frequently Asked Questions
What is Solution/Problem Fit?
Solution/Problem Fit is the second of the 8 Fits. It measures whether your solution directly eliminates the specific pain you identified, with evidence from at least one real customer whose situation measurably changed because of your product.
How is Solution Fit different from Product-Market Fit?
Solution Fit is narrower and comes earlier. It asks whether your solution works for a specific customer in a specific way. Product-Market Fit is broader: it asks whether enough of the market wants what you've built badly enough to keep using it and tell others. Solution Fit is the foundation Product-Market Fit gets built on.
What's the difference between a painkiller and a vitamin?
A painkiller eliminates a problem the customer was already trying to solve. A vitamin makes something a little better but isn't necessary. Painkillers get bought first and cut last. Vitamins get cut from the budget the moment things tighten. Investors fund painkillers.
How do I prove Solution Fit in a pitch?
Tell one customer story. A specific person, a specific situation, the measurable change before and after your product. Features and screenshots don't prove Solution Fit. A real customer story does.
Where do you stand on Solution Fit, and the seven that follow?
The 8 Fits MRI is a free eight-minute diagnostic that scores your investor readiness across all eight dimensions, including Solution/Problem Fit. Built specifically for founders raising their first round.
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