Although Apple has never allowed the direct sale of vape cartridges within apps, the company is still clamping down on vaping-related apps. Such apps provide vaping news, social networks, games, and more. Apple’s statement:
We take great care to curate the App Store as a trusted place for customers, particularly youth, to download apps. We’re constantly evaluating apps, and consulting the latest evidence, to determine risks to users’ health and well-being.
Under 1.4.3 of the App Store Review Guidelines:
Apps that encourage consumption of tobacco and vape products, illegal drugs, or excessive amounts of alcohol are not permitted on the App Store. Apps that encourage minors to consume any of these substances will be rejected. Facilitating the sale of marijuana, tobacco, or controlled substances (except for licensed pharmacies) isn’t allowed.