Question: which is the best youtube video downloader?
Answer: YouTube Go.
Videoder. Videoder is a powerful YouTube video downloader for Android. ... 
TubeMate.
KeepVid. KeepVid is one of the best Android video downloaders and one of the most popular ones around. ... 
Snaptube. ... 
InsTube. ... 
VidMate App. ... 
YT3 Youtube Downloader.