Previously Google offered Youtube offline in its officially app only through select countries such as Kenya, Nigeria, Philippines, India, Ghana etc cutting off a big percentage of the developing world that need the service. The Youtube Go app is on the Google play store although currently only officially available in India. So I had to use third-party stores, AppMirror to download the App to my phone as an APK and manually install. The app is only about 8MB in size, which is really small. When you want to download video offline, the app will show you download sizes in Basic quality(which is smaller) and standard quality. However, when I tried to download sample videos for offline viewership, I got this “The owner of this video does not allow it to be saved or shared” warning. Apparently this could be due to copyright restrictions that content owners have set for their videos. When I logged in to Dignited channel to lift off any restrictions, I couldn’t find the option that enables publisher to ban their content from being downloaded offline. So it seems its an issue that Google has to rectify with the app. It seems users have to wait till the app leaves beta stage, perhaps by then Google would have rectified the Download issue. Until then you have to use a number of Youtube downloaders.