Google Tag Manager allows you to quickly and easily update the configuration and flag values of mobile apps that you have created. Instead of rebuilding and deploying new binaries, you can use the Google Tag Manager interface to change configuration values (for example, timeout, ad position, game play dynamics) and turn on flag-enabled features in your mobile apps.
Read more about Google Tag Manager
Unity 5 ready
Documentation | Unity Forum
Avaliable on Platforms
* IOS
* Android
How It Works
A container in Google Tag Manager holds the macros and rules which govern how the configuration and flag values in your app are set. You manage the container - editing its macros and rules, previewing, testing, and publishing new versions of the container - from your Google Tag Manager account.
Video Introduction to Google Tag Manager
How to get support