Previously You Tube Is not Giving an option for saving videos, peoples third party apps for download videos. I am also using Tube Mate which is not available on playstore but now I am using you tube app mostly because, they upgrade to newer version which provide a new interface with more features like save offline videos, like hem etc. Now you tube is useful for everyone because now you can save videos and browse them offline and play them without buffering.You tube requires a high speed connection for playing videos which is not available in every area, So now with low connection speed everyone save videos amd browse them later