# How I built a measurable free-to-$29 AI visibility funnel

> Source: <https://dev.to/david_bob/how-i-built-a-measurable-free-to-29-ai-visibility-funnel-i22>
> Published: 2026-07-11 09:43:44+00:00

I built [Answer Visibility Lab](https://answervisibilitylab.com/ai-visibility-checker?utm_source=devto&utm_medium=community&utm_campaign=pro_audit_launch&utm_content=build_story) to help founders and SEO teams check whether AI answer engines can understand, cite, and recommend a brand.

The checker generates buyer-intent prompts for ChatGPT, Perplexity, Gemini, Claude, and Google AI Overviews. It also maps competitors and turns missing AI mentions into concrete page and GEO work.

It deliberately does **not** pretend to measure live rankings without running the prompts. The output is a repeatable audit workflow: prompt set, comparison ideas, citation fields, and technical fixes.

I instrumented the complete path in GA4:

Campaign UTMs are persisted through the journey and passed to Payhip, so a purchase can be traced back to the actual community post instead of being grouped into direct traffic.

I am changing only one variable: the $29 Pro CTA copy.

The experiment runs for at least seven days and will not be called early without enough Pro-offer views per version.

If you do SEO, GEO, agency audits, or founder-led marketing, I would value blunt feedback:

Try the free checker: [https://answervisibilitylab.com/ai-visibility-checker?utm_source=devto&utm_medium=community&utm_campaign=pro_audit_launch&utm_content=build_story](https://answervisibilitylab.com/ai-visibility-checker?utm_source=devto&utm_medium=community&utm_campaign=pro_audit_launch&utm_content=build_story)