What does runApp do in Flutter?

A widget is either stateful or stateless. If a widget can change—when a user interacts with it, for example—it’s stateful. A stateless widget never changes . Icon , IconButton , and Text are examples of stateless widgets.

The runApp() function takes the given Widget and makes it the root of the widget tree . In this example, the widget tree consists of two widgets, the Center widget and its child, the Text widget. The framework forces the root widget to cover the screen, which means the text “Hello, world” ends up centered on screen.

Runapp is one of many adware-type apps that form part of the Pirrit adware family . Typically, apps of this type feed users with unwanted ads, however, they might also gather user details. Research shows that Runapp installs another identical app called MacPerformance (also part of Pirrit adware).