YouTube Go is an official app from YouTube that lets you download videos to your Android. This stops you from wasting your data when you want to watch a specific video but don't have access to a WiFi network.
Plus you have the option to watch videos in basic quality.
Another interesting feature YouTube Go offers is how it lets you send and receive videos you've downloaded via Bluetooth. Thanks to this new feature, you won't use a single kilobyte when sharing your favorite videos with friends.
YouTube Go is an alternative YouTube client that's especially useful for anyone with slow or unstable Internet connections. While it doesn't offer all the features the official YouTube app does, it does have some really useful and unique ones instead.