Built a free coffee equipment quiz after seeing people waste money

I built: CoffeeMistakes.com

The problem: Everyone on Reddit coffee communities makes the same expensive mistakes (cheap espresso machines, blade grinders, ignoring bean freshness)

The solution: Free 2 minute quiz that tells you what NOT to buy snd what to buy based on your answers, goals, and current setup.

Tech stack: Vanilla JS, no database, pure front end

What makes it different:

  • Built from analyzing 1000+ Reddit threads (Ai helped me alot in this part)
  • Tells people "don't buy this, save more" when needed
  • No email capture (intentionally friction free)
  • Has Amazon affiliate links (transparent about it)
  • Updates weekly based on feedback

Stats after 2 weeks:

What I learned:

  • People WANT brutal honesty about budget purchases
  • "What not to buy" converts better than "what to buy"
  • Free + no email = way more completions

Would love feedback! Especially on UX/conversion optimization.

Link: https://coffeemistakes.com

Open to any questions about the build process or approach.

Posted Nov 10, 2025, 12:08 PM UTC

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