Notification Center is a feature in iOS, iPadOS, macOS and watchOS that provides an overview of alerts from applications.

Initially released with iOS 5 in October 2011, Notification Center was made available on Macs as part of OS X Mountain Lion in July 2012.

Users could also select the option to display Twitter and Facebook buttons, allowing them to send tweets or update their status directly from Notification Center.

[3] In iOS 7, however, the option to send tweets or update Facebook statuses has been removed, and replaced with widgets.

macOS users may also disable alerts and banners for a day, stopping notifications appearing on the screen.