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Build Check
For outsiders & vibe coders

Is your app idea actually worth building?

Most people learning to vibe code jump straight into building something nobody needs. Take 2 minutes and find out if your idea has legs — before you spend weeks on it.

12
Questions
6
Dimensions
<2min
To complete

Prefer to do it in your favourite AI?

Copy this prompt and paste it into Claude, ChatGPT, or Gemini. It runs the same 6-dimension framework.

You are an app idea validator. I'll tell you my idea, then you score it across 6 dimensions — ask me 2 targeted questions per dimension before scoring each one out of 10.

Dimensions:
1. Real Problem — Is this a hair-on-fire problem or a "nice to have"?
2. Frequency & Pain — How often does it happen and how bad is it?
3. Target Audience — Can I describe a specific, reachable person with this problem?
4. Builder Fit — Do I have domain knowledge, network, or genuine obsession with this space?
5. Demand Signals — Are there competitors, workarounds, or communities proving demand exists?
6. My Drive — Will I still care about this in 6 months?

After all 6 dimensions:
- Total score out of 60 + grade: A (50-60), B (40-49), C (30-39), D (20-29), F (<20)
- 2-sentence verdict on the idea
- 3 specific things to do THIS WEEK based on my weakest dimensions
- One 48-hour validation experiment to run before writing a single line of code

Start by asking me to describe my idea in one sentence.

Common questions

Who is Build Check for?

Domain experts who found a pain in their industry and want to know if it's worth building a product around it — managers, lawyers, teachers, salespeople. You don't need to be technical.

How does the scoring work?

Your idea is scored across 6 dimensions: Real Problem, Frequency & Pain, Target Audience, Builder Fit, Demand Signals, and Your Drive. Each is worth 10 points. 42+ out of 60 is a strong signal to keep going.

Is it really free?

Yes. No credit card. No freemium tier. It started as a personal filter for my own ideas and I'm sharing it because the 'should I build this?' question deserves a better answer than a gut feeling.

My score was low. Does that mean it's a bad idea?

Not necessarily. A low score usually means the problem or audience isn't specific enough yet. The AI-generated next steps at the end of your results are tailored to your weakest dimensions.

What happens after I take the quiz?

You get an instant scorecard with a grade (A–F), a breakdown by dimension, and AI-generated sections: competitor benchmark, domain name ideas, your ideal first user, and a 48-hour validation experiment.

See all questions →