A pre-installed application, also known as a preloaded app, is a software program that is already installed on a device before it is purchased by the user. These applications are typically included by the device manufacturer or operating system provider and are ready to use without the need for any additional installation. Pre-installed applications can range from essential system tools to popular social media and productivity apps. While they can provide convenience and functionality, they can also take up storage space and cannot be easily removed by the user.