Downloading TubeMate is legal but whatever you do with it may not be so. The application itself warns us as soon as we download it that it has been developed for personal and private purposes only. In other words, the user can download videos to play them offline only if they are to be watched privately. Its conditions forbid the redistribution of those contents, by means of any channel, and obviously cannot be involved in any commercial transactions.
But we’ve mentioned that it’s legal to download this app because its potential users may not want to use it to download videos: it can be used as a client to play any online video without downloading it. On the other hand, the download video system isn’t exclusive to YouTube and can be used on many other portals so we could want to use it to download videos from sites without any kind of restriction.
That’s the reason why TubeMate YouTube Downloader isn’t available on the Google Play Store and we have to resort to other alternative download sites of the likes of Malavida to be able to download the APK and install it on a smartphone or tablet. The same thing goes for other applications of the likes of Vidmate or Snaptube, stores such as Aptoide or WhatsApp mods like WhatsApp Plus or OGWhatsApp