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:
- ~1200 users
- 4.9/5 feedback
- Posted on r/JamesHoffmann, got great feedback
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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