This is Google Adsense Ultimate plugin for initializing in wordpress site. you don’t need to add script directly/manually to the main theme. some time it is possible to lost adsense from your site when theme is update or changed. by using this plugin. you will never lose your adsense anymore. no more hassle ! just install the plugin and enjoy!

See documentation here

Go Pro

Checkout Pro version Ultimate Google Adsense of this plugin that provides a lot more functionality.
– AMP page support