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I am working on two applications that provide complementary functionality - one is a main app with authentication flow and the other handles additional functionalities within my service. I would like to publish these as separate apps on the App Store but allow them to share data through an App Group, specifically to enable sign-in state to carry across. The flow would be: Main app authenticates the user and saves an authentication token to the shared App Group container Second app launches and checks the container for this token. If present, it signs the user in automatically. In this way the Main app handles all login functionality which enables certain features in the other app(s) when logged in state is present. My questions are: Would this violate any App Store guidelines around app functionality distribution or data sharing? I intend to provide a technical rationale during review on why two apps are necessary. Would Apple allow such an implementation? What best practices should I follow when submitting for app review approval? It would be great to hear thoughts around the viability of this app architecture. Please let me know if further technical details are needed as well. Looking forward to community feedback on whether Apple permits apps sharing sensitive data via App Group specifically for identity management. Reference: guideline 2.5.2 2.5.2 Apps should be self-contained in their bundles, and may not read or write data outside the designated container area, nor may they download, install, or execute code which introduces or changes features or functionality of the app, including other apps. Educational apps designed to teach, develop, or allow students to test executable code may, in limited circumstances, download code provided that such code is not used for other purposes. Such apps must make the source code provided by the app completely viewable and editable by the user. https://developer.apple.com/documentation/xcode/configuring-app-groups