YouTube go is introduced for users with 2G or low internet speed. It ables the users to watch YouTube videos with very low data. It was now at beta version and can be downloaded from google play store. ( Beta version apo are those apps which are currently not fully developed) We can only watch video by only typing video name.
It need to add features in it like channel subscribed , videos added for watch later and create playlist etc. But It also has some good features like what amount of data will be used by watching video. And we can use low data by watching video in normal ( low video quality mode) mode.