Steal this startup idea
Facebook Marketplace App Studio
Facebook has 3B users.
16% use Marketplace monthly.
That's 480M monthly users.
51% of ALL social media purchases happen there.
People make their entire living flipping on Marketplace.
Meanwhile:
* eBay has thousands of apps (some acquired for $100M+)
* Shopify devs earned $1B through their app ecosystem
Yet there are ZERO real tools for Facebook Marketplace
The API allows it. I vibe-coded one myself. It worked.
Here's what sellers would pay for:
1. Price scanners (is this dresser underpriced?)
2. Arbitrage alerts (worth more on eBay?)
3. Auto-responders for leads
4. Listing optimization tools
Productize what people are doing "in the shadows."
Massive platform.
No competition.
That's the alpha.
