This application is simple to use for download videos.
How To Use?
Easiest way to use that is just open a video on app and click Share. You'll find Video Downloader on that list and just Tap on it.
The other way to use that app is open the app and write or paste your video link and click Download.
App, download videos on phone storage.
PS: Downloading videos that have copyrights, illegal content etc. cannot be associate with App. It's completely users choice. App cannot be associate with Youtube. This is not Youtube Downloader cause that violates the YouTube Terms of Service