Why it worked
The video leverages the aspirational desire for free products (iPhones) and the gamification of everyday activities (walking) through a seemingly rewarding app, creating a compelling narrative for viewers.
Summary
The video shows a person and their best friend purchasing a second iPhone, implying that they earned the money for it by using a "purple app" that pays them to walk. The app's interface, showing steps and rewards, is briefly displayed on a phone screen.