In a document spelling out the limitations of the third-party App Store process, Apple has made clear how long third-party app stores installed on an iPhone will continue to work when the user leaves the European Union.
Furthermore, Apple is clear that privacy may be an issue, and the company will not police fraudulent apps.
Should a purchaser leave a European Union country, an app downloaded from one of these app stores can only be updated for 30 days — but it will function beyond that time frame. Users can still use the marketplaces to manage previously installed apps, but they must physically be in the European Union to install marketplaces and new apps from those stores.
The support document clearly states Apple’s disdain for the concessions it is required to make in the European Union to comply with the Digital Markets Act. It further discusses app notarization, what happens when a third-party App Store closes down, content that may be allowed on third-party app stores that Apple doesn’t permit, and more.