I Want Product-Market Fit

I Want Product-Market Fit

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I Want Product-Market Fit
I Want Product-Market Fit
Get your product-market fit score (0/100)

Get your product-market fit score (0/100)

Evaluate your pm-fit with my new ✨AI✨ tool

Jeroen Coelen's avatar
Jeroen Coelen
Jul 16, 2025
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I Want Product-Market Fit
I Want Product-Market Fit
Get your product-market fit score (0/100)
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💡 Sorry Jesus, lord of AI, for I have sinned, but I’m tapping into the AI hype now. Yes, you read that correctly. I’ve made an AI tool that helps to get a sense of product-market fit.
🦄 It’s called PM-FIT GPT. 🦄

Rundown

  • Product-market fit is vague

  • Measuring it pre-product is hard

  • Still, you would like to get a sanity check if you are going in the right direction

  • Now, Product-Market Fit GPT gives you a 0-100 score and clear feedback

What you get: Overall score + Essential Fits

Feedback per essential building block

What do you need?

  • You need nine building blocks of product-market fit based on the logic below.

  • These are 9 simple questions to reveal simple answers.

  • If answered correctly, this gives a natural flow that makes it reasonable to believe that your product will be chosen for that problem over the competition.

  • Access to the Product-Market Fit GPT (below).

More information on the logic here.

PM-Fit GPT 🦄

I’ve built a custom GPT, trained on my articles about essential building blocks and on handwritten feedback about several startups’ PM‑Fit logic.

After a period of serious tweaking, it now delivers genuinely useful feedback when you enter your nine answers.

“No bullshit, just direct feedback to find your niche, and the real reasons customers would buy you”.

Example: an unfocused sustainability platform

Let’s run this poor, fictitious startup through it. They are building a platform for sustainable initiatives, but lack focus.

  1. Customer Segment: SMEs wanting to save money

  2. JTBD: Focus on energy transition

  3. Problem: It’s hard and overwhelming

  4. Dominant Competitor: A failed initiative with reporting

  5. Competitor Flaw: But nobody used it

  6. Consequence: Trouble with meeting demands

  7. Solution: Luckily, we have an all-in-one platform

  8. Feature → Root Problem: That is easy to use

  9. Feature → Competitor: And integrates with SAP

Overall Score and core focal points

Scorecard with feedback per building block

Get access to the tool below, patrons only

  • Going forward, some posts will be paywalled. Read more about that here.

    • Free content will remain every month: short posts, quick insights, frameworks

  • But some things will become patron-only:

    • Complete Step-by-Step Guides

      • Such as Brochure tests and Playbook to PM-fit

      • (Both will get a complete update this year)

    • The Ultimate Guide for Customer Interviews (10 Chapters)

      • To be released this year.

    • This PM-Fit GPT, which will get more updates and tweaks

    • New content, such as handy checklists for running customer interviews

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