Google analytics is a part of Google Marketing Platform brand that tracks and reports website traffic. Google analytics provides a software development kit that includes various software development tools. This kit is usually installed to use the compiler, debugger and the software framework for building applications with advanced functionalities such as advertisements and push notifications.
Google analytics software development kit allows the gathering of usage data from iOS and Android apps also. Browsers, browser extensions, firewalls and other means can be used to block Google Analytics.