A list of the most relevant links on the internet to know more about APK format file and Android.
These are some of the source used to fill information in this website.
- Android operating system official site: https://www.android.com/
- Android Studio and SDK tools for developers. Official site for Guides Help and download: https://developer.android.com/studio
- Wikipedia page with information of the format, history and related links: https://en.wikipedia.org/wiki/Android_application_package
- Best places to download APKs. Free downloads
Android is a free operating system from Google.