The Download Now link directs you to the Windows Store, where you can continue the download process. You must have an active Microsoft account to download the application. This download may not be available in some countries.
Vidmate is an app that lets you download videos and songs from the Youtube. Same as Tubemate, this app lets you download any number of videos or songs of various qualities. Yes, you can download any quality of video or song that you wish to. You can download full HD (High Definition) videos here too.