Android 4.4 KitKat programs is available in .APK file but some people don’t know how they can download that file and run on Android Smartphone’s. If you guys are interesting in installing an app that you can download over Google Play store, you just require an .APK file. Don’t know how to install APK on your android phone? Tension Not: you will find that with a file manager app like Astro File Manager. Just check it out below tutorial video.