What apps let you play a youtube video at 2x speed? I've learned to like 2x video playback on my computer, but the official YouTube iOS app doesn't suggest that option. 

What ways are there to watch youtube videos at custom speeds on iPad / iPhone?
Speedeo just came out and allows you to control the speed in 0.25 increments. It's pretty sweet I've been using it for the past week or two. 

Also good because the history is easy to access so you can close and reopen videos easily.