This frustrated a lot of users, who didn't see the necessity in having the app when the messaging function of the Facebook app met all the user needs of the time. When the app was released, users were prompted to download it instead of accessing messages through the Facebook app, tapping on the Messenger icon would take you to the separate Messenger app. In 2010, Facebook started developing Messenger as a standalone app and the following year it was released for Android and iOS mobile devices.
Originally, Messenger was just Facebook Chat and was integrated into the website as a private messaging function. Facebook Messenger is a messaging platform used to communicate on Facebook.
