Four teens. A photo-of-your-plate app. $12M/year.

Zach Yadegari + friends, all 17-19. They wrapped GPT-4 vision around 'take a photo of what you're eating' and shipped it to the App Store. Sits in the US top 20 health apps.

• →Zero marketing budget. Grew on TikTok organically.
• →The prompt is literally 6 lines. That's the whole product.
• →One of the founders is still in high school.
• →Lesson: the fastest path is boringly obvious problems + AI + a nice UI.