you are watching or rather listening to a music video on YouTube but are distracted by an email notification. You switch to the Gmail app to check your mail and, as expected, the YouTube video stops playing.
The uListen app has a simple interface and minimal features which is what I like most about this app. Just use the search button to find videos and playlists on YouTube and hit the play button. You can also tap and hold a search result to favorite it or to add it to your playlist. uListen doesn’t link to your YouTube account and all your playlists and favorites are saved locally.
Then there are apps like SuperTube and Viral that more like clones of the official YouTube app except that they also let you watch or play YouTube videos while in the background. You can create local playlists or connect these apps to your main YouTube account and access your playlists, watch later queue and favorites. Another handy feature is that you can do a vertical swipe on the video to increase or decrease the volume.
Both Viral and SuperTube offer a floating video player which essentially means that you can pull out a YouTube video and place it over any other app. It’s like the Picture-In-Picture effect – you can read the New York Times in the browser and watch a movie on YouTube simultaneously. I prefer SuperTube more since it lets you choose a different video in the queue from the floating player itself.