In this tutorial we are going to see how to download YouTube videos on your iPhone or iPad. YouTube has introduced offline video option, but its not available for most of the videos. Where YouTube Red, an ad-free subscription service that’s available only in US can use offline videos.
Note: This app is tested in iOS 9 and working successfully, if you are using iOS 10 then beware that downloader apps may stop working.
How to:
Step 1: Download and install “Documents 5” app from AppStore.
Step 2: Open Documents 5 app and tap on browser.Once you open the browser, enter en.savefrom.net on the URL tab.
Step 3: Now paste the YouTube URL and get the download link. You’ll see the videos in the Downloads section of the Documents 5 app.
Step 4: To save this video to your iPhone or iPad’s Camera Roll you need to hold on the video and drag it up until you see the folder list > Photos and then into Camera Roll.
Note: Choose the video quality before you download a video from en.savefrom.net.
Source: macworld.co.uk