I built a bike fitting app and while researching how to market it, I kept running into a gap - no tool told me whether my content was being cited by ChatGPT or Perplexity, only whether it ranked on Google. Those are two different problems.
So I got sidetracked and built Beacon — an SEO + AEO audit tool that scores any page across 14 dimensions for both Google ranking potential and AI engine citation likelihood. It's live at beaconsignal.xyz with 3 free analyses.
The bike fit app is still waiting. But this felt like a real problem worth solving first.