If you are a regular user to continually visit YouTube to check new videos that appear on the channels you have subscribed to with your Google account or simply because you like to browse a bit that disaster drawer called YouTube, you already have an ally in your search to help you save those videos that interest you the most.
YouTubeHunter is a small application that is responsible for searching by different methods all those videos that you are interested in and then choose the ones you want to download giving you a choice even in what quality you want to download said video.
Board to quality option included in a window adjoining the main We can also send a preview of the chosen video with all the information available on it just below.
This application has a price that starts at $ 9.99 Lite version up to $ 19.99 for PRO version going through the "Full" at a price of $ 14.99, the difference between these versions is basically that the PRO can also search and download from other pages other than YouTube, such as Vimeo.
It is also important to mention that it is not available in the App Store but can be downloaded from the author's website independently, although of course there will be no problem in relation to security since it is totally legitimate.
For this same task we can also use other apps more "famous" among the user community such as Jdownloader but it is not so focused on it and therefore lacks options such as viewing videos or simply searching for them.