Introduction - you can download all the YouTube videos from here in whatever quality you prefer.
You can also download a audio file of a video on YouTube.
Pros- you can save all videos from YouTube Then sahre it with your friends use the media file anytime anywhere. If you have less data than you can also Change quality of video you want to Download 144p 240p 360p. 1080p all Quality is available to download. You can save a mp3 file of any YouTube Video.
Cons- it is a very slow application. Considering the entry of jio everyone have Lots of data to use in that case you can opt For the original YouTube app and you can Also save your video for offline usd but you Can’t share that offline file
Vedict - if you are on limited data plan and slow Internet connection and if you want to Share YouTube videos with friends than you Can use this app.