Live· Apr 2026

SignalCheck.

The AI that challenges your idea before you build the wrong thing.

SignalCheck product screenshot

Signups

1

MRR

£0

Stack

Next.js · Tailwind CSS · Framer Motion

- Current read

Faruq + Amina · Aug 29, 2026

Faruq thesis

SignalCheck is a critical-thinking tool that refuses to provide superficial encouragement.

Next moves

  • Enhance the initial gate mechanism to reject weak ideas more effectively. - This unblocks the thesis by ensuring that users are not misled into believing their weak ideas are viable, thus preventing wasted effort and resources.
  • Integrate more diverse data sources for competitive landscape analysis. - This supports the thesis by providing a more comprehensive view of market conditions, helping users understand the true feasibility of their ideas.

Watch

  • Over-reliance on AI analysis leading to blind spots in idea validation. - If users become overly dependent on SignalCheck's AI without critical thinking, they may miss important insights or nuances that the tool cannot detect.

Amina visual track · running

Use real product captures first; create hero stills, proof crops, and social/OG variants from Faruq's latest thesis and current-state evidence.

— Why it exists

I built SignalCheck because I kept wishing it existed.

I have a paste-box full of product ideas - most of them sound good at 11pm. Half of them have been built already. The rest need a conversation before they need a line of code. The people around me either tell me it sounds good, or ChatGPT tells me it's a great concept. Neither is discovery.

So I built the tool I'd have paid for. And I made it GBP5 because that's what I wished a real discovery session cost when I was trying to figure out what to build next.

It's Week 1 of 26 products in 26 weeks. I used SignalCheck to pressure-test SignalCheck before I built it. That felt right.

— How it's built

Next.jsTailwind CSSFramer MotionSupabaseAnthropic ClaudeStripeOAuth

Visible research step

No instant output. The user sees the research running. Builds trust. Separates SignalCheck from every generic AI chat.

Open-ended probing

The AI generates probe questions live from the pasted idea. Not a fixed form, not a generic checklist - the questions a senior PM would actually ask.

No verdict

SignalCheck challenges. It doesn't kill. Who are we to say your idea won't work? The point is to hand you sharper thinking, not a yes/no.

Credit system, not free tier

Every run costs one credit. 3 credits on sign-up, GBP5 for 10, GBP9/month for 50 refreshing. Clean unit economics from day one.

— The lesson

The visible research step is the product. Users watch the research happen and trust the brief more because of it. It's the one decision that makes SignalCheck feel different from pasting the same idea into ChatGPT.

— Try it

See SignalCheck for yourself.