An APK (Android Package Kit) is a file format used for distributing and installing applications on Android devices. It contains all the necessary elements for an app to function, including code, resources, assets, and manifest files. APKs are similar to executable files on other platforms, like EXE on Windows. Developers use APKs to package and deliver apps, while users install them directly or via the Google Play Store. APK files can be installed manually or automatically via app markets.
