YouTube’s app for iOS has also been updated and added many of the features from the Android app. You can watch a video while searching for the next one, just like picture-in-picture, search for playlists and use the “play all” button.
There’s something that only works in the iOS app: an Easter Egg. I’ve only tested this on an iPad, so I don’t know if it works on an iPhone. Open the YouTube app (make sure you have the latest version – 2.0), keep a finger on the left sidebar and use another finger to swipe right until the list of videos because almost empty. You’ll see a funny cat with a play button.
{ Thanks, Jonah and Max. }
Google Operating System