ProofSpark

🚀 Why I Built ProofSpark (and Why Validation Shouldn’t Take 6 Months)

Hey Product Hunt community!

I’m Ivo, and I’ve been on both sides of the startup rollercoaster—as a founder who wasted time building the wrong thing, and as a dev who watched others do the same.

The Problem That Drove Me Nuts:

I kept seeing brilliant people (myself included!) sink months—or even years—into ideas before validating them. By then, it’s too late: you’re emotionally invested, financially strained, and stuck in the sunken cost fallacy.

So I Built ProofSpark To Fix This:

• Instant, AI-powered validation → Get real feedback before you code.

• Zero fluff, zero paywall → No credit card, no "upgrade to see results."

• Practical, not theoretical → Answers like "Who’s your real audience?" and "What’s your biggest risk?"

Why This Matters Now:

With AI letting us build faster than ever, validation is the new bottleneck. You wouldn’t drive cross-country without GPS—why build without checking demand?

Try It & Roast It:

• Founders: Test your idea in 2 mins → proofspark.com

• Curious minds: Play with the demo (I added fake ideas for fun).

• Critics: Tear it apart! I’m here all day to answer tough questions.

Behind the Scenes:

• The AI uses LLMs trained on 5,000+ failed & funded startup patterns to spot red flags instantly..

• I almost called it "FailFast" (bad idea? 😅).

• Launched this with a $0 marketing budget—PH is my first stop!

Ask Me Anything:

• How I trained the AI on real startup post-mortems

• Why free was non-negotiable

• My biggest fear about this launch

Let’s chat! And if ProofSpark saves one person from a 6-month detour, I’ll call this a win.