What is the difference between google tag manager and google analytics?

Question

I am reading about web analytic and came across GTM and GA.

It seems that GA is a service provided by Google which generates reports and statistics on website traffi

Answer 1

GTM is more generic and can be used for other purposes like Variable Containers that can change configurations without changing you App code. GTM is easier to use for marketer without need for developers. One can connect GAnalytics to GTM so all hits can be seen on GA dashboard.

Those are some reasons why to use GTM: http://www.lunametrics.com/blog/2014/04/08/8-reasons-start-google-tag-manager/

For Android, A draft implementation is at https://developers.google.com/tag-manager/android/v4/#getting-started