An app store is a digital platform where users can browse, download, and install applications for their devices, such as smartphones and tablets. These stores provide a wide variety of apps, including games, productivity tools, and social media platforms. Popular examples of app stores include the Apple App Store for iOS devices and the Google Play Store for Android devices. App stores typically feature user reviews, ratings, and descriptions to help users choose the right apps for their needs. They also manage app updates and ensure that the applications meet certain security and quality standards before they are made available for download.