AI built me a Business in 48 Hours (Online Directory)
Video summary
Companion notes
A Hong Kong gym directory built in 48 hours with Hostinger Horizons and Kimi shows the directory model still prints ad revenue at scale.
The three real-world benchmarks
roadsideamerica.compulls 85,000 monthly visitors and earns a lowball $5,000–$7,000/month from display ads alone.- Atlas Obscura hits 1.1 million monthly visitors and has expanded into Spotify, Amazon listings, and a podcast.
findagrave.comgets 1.4 million monthly visitors and generates $60,000–$70,000/month, possibly $100,000/month, almost entirely from AdSense and display ads.
What was actually built
- A local Hong Kong gym directory, filtered by location, category, and features like
Hyrox,24 hours,yoga, andpersonal training. - Five listings on day one, with a target of 20–30 listings as a credibility threshold.
- A vibe-coded "Pick My Workout" roulette page spun out in 5 minutes and embedded as a WordPress page.
The AI stack and the prompt that matters
- Hostinger's no-code AI builder
Horizonsfor the front end, Kimi to draft the PRD, then Horizons again for the final build — the loop was iterated, not single-shot. - Core prompt Martin shared:
"Write my landing page in eight different ways... Then create five judges... Have every judge score every version... Kill the losers, merge what worked into a final version, and show the scoreboard."The judge pattern acts as a verification loop against UI guesswork.
Money path (in this order)
1. Scraped free listings via AI until the site looks legit. 2. Free featured slots for big-brand gyms in exchange for goodwill. 3. Paid featured listings sold to personal trainers and boutique gyms. 4. AI-written SEO articles for organic reach, then AdSense on top. 5. Optional digital product launch once traffic compounds.
Cost stack mentioned
- Hosting: Hostinger, Astra, or WordPress on a VPS.
- Cheap domain option:
Porkbun, connectable to a VPS so an agent can serve the site. - A real business email was flagged as required "just for optics."
Watch on YouTube
Prefer the native player? Open it on YouTube: https://www.youtube.com/watch?v=_8iv521cy_A
