In a developer document outlining system-wide changes to the EU App Store, Apple explains why alternative app stores, alternative payment options and other updates are limited to the EU. Apple said the changes pose significant risks to users and developers, "providing new avenues for malware, fraud and scams, illegal and harmful content, and other privacy and security threats."

Additionally, Apple said the updates harmed its ability to "detect, prevent, and take action" against malicious apps, as well as its ability to support users affected by issues with apps downloaded outside of the App Store. We are limiting these changes to the EU because we are concerned about the impact they will have on our users' privacy and security experience - this remains our North Star. "

To limit risk, Apple requires alternative app stores to be notarized and checked for malware and viruses, but Apple does not evaluate the content of apps. While notarization will add safeguards, Apple said there are risks to alternative App Store systems.

If not managed properly, alternative distribution can pose greater privacy, safety, and security risks to users and developers. This includes the risk of installing software from unknown developers that does not meet the requirements of the Apple Developer Program, the risk of installing software that uses malware or other malicious code to undermine the integrity of the system, the risk of distributing pirated software, the risk of exposure to illegal, objectionable and harmful content due to low content and moderation standards, and the risk of scams, fraud and abuse. Apple is less able to address these risks and provide support and refunds to customers regarding these issues. Even with safeguards in place, many risks remain.

Going forward, Apple plans to communicate with the EU, the developer community and EU users about the impact of alternative app stores.

Outside the EU, app developers must continue to use the AppStore and in-app purchase system as usual.