APK (Android Package Kit) is a file format for distributing and installing application software and middleware. The APK files are similar to other software packages such as APPX in a Microsoft Windows or Deb packages in a Debian-based operating systems like Ubuntu. To create an Android Package Kit file, the program for Android should be compiled first, and then all of its parts are packaged into one file. This file contains all program’s code, resources, certificates, assets, and manifest file. Android Package Kit files can be installed on Android devices like installing software on PC and it has the file extension as “.apk”.
