As you no that Google launched YouTube go which uses less internet and have specific features such as sharing feature, through which you can share your videos which you offlined with your friends without losing data again.I think The creator of YouTube go created this app with an aim to provide buffering free videos when in less data.
It has almost same layout as youtube has.
It has some defects as well.
In this app you can’t like the video and even you can’t subscribe the channel as well.
And it compresses the video so the quality wil be little different than YouTube.
And you can’t minimize the video as you do in youtube.
But overall it is a good app to watch the videos in less data consumption.