The video Walla YouTube App on your iPhone does not have a playback function that can let you to watch the same video over and over again. However, there are some easy ways to YouTube repeat iPhone video as listed below.
Loop or Repeat YouTube Videos on iPhone
On Mac or Windows computer, it is very easy to loop or loop YouTube videos. Just right-click the video and choose the Loop option from the context menu that appears. It is not easy to spin YouTube videos in a mobile app. but this can still be done by adding the video to a new playlist and repeating the playlist.
However, there is no such option for playing YouTube videos on an iPhone or iPad. You can also loop YouTube videos using the free video Walla YouTube mobile app on iPhone or Android.