Looking for a YouTube monitor and downloader. Sorry if wrong place for question.

I'm looking for a tool that monitors a YouTube channel, then downloads only new videos into a folder.

I found ChannelHoarder, and was wondering if anyone had any experience with it and/or if anyone had any other suggestions?

Also, sorry if this is not the right place for this question. Mods, feel free to remove if this isn't the right place.