Today, a high school tutor can sell video-based lessons directly to customers via web browser, and if they choose to offer an iOS app, they can opt against in-app payments. This is because video-focused apps are “reader apps.” But if this tutor wants to add interactive experiences, such as a physics class that involves the construction of a simulated Rube Goldberg machine, or an instructional course on automotive engine repairs with rich 3D immersion, they are obligated to support in-app payments because they’re now an “interactive app.”
