Semantic Search for Your Social Media Followers: The App Nobody Has Built Yet

Zach tweeted about this idea two days before the episode and the post blew up. The concept: build an app that lets you semantically search through your followers on Instagram or X. Instead of scrolling through thousands of names, you could query "entrepreneurs in Miami" or "people who work in AI" and instantly surface the relevant connections hiding in your follower list.

The use cases are wide and immediately obvious. Dating — Instagram is quietly one of the biggest dating platforms, and being able to search your followers by type would be powerful. Networking — Zach discovered that after his tweet went viral, a ton of interesting people had followed him that he had no idea about. There is no notification system that flags "someone notable just followed you." Deal flow, recruiting, partnership scouting — the applications stack up fast.

The reason nobody has built this well is likely a combination of API restrictions and the fact that it seems like a feature, not a product. But Zach frames it as a clear "few million dollar idea" — the kind of focused consumer app that a small team could build and monetize quickly. It is not a billion-dollar opportunity, which is exactly why he is not building it himself, but it is perfect for someone looking to build their first profitable app.

The starting point would be a Chrome extension or mobile app that indexes your follower list and layers semantic search on top. Start with one platform, prove the value, and expand from there.