What feature allows users to customize app permissions on iOS?

The feature that enables users to customize app permissions on iOS is privacy settings. Privacy settings allow users to manage how applications access data and functionalities on their devices, such as location services, contacts, photos, and more. This empowers users to have greater control over their personal information and ensures that apps only access what is necessary for their functionality.

The privacy settings are designed to provide transparency and security, making it clear which apps have requested permission to access specific types of data. Users can easily review and modify these permissions at any time, enhancing their overall privacy and security posture.

The other options do not serve this purpose. The notification center is designed to manage and display notifications from apps, while the control center provides quick access to settings and controls but does not focus on customizing app permissions. The App Store is primarily for downloading and purchasing applications, without features that allow for the modification of app permissions after installation.