Many people were asking how to download FB, Instagram and Twitter videos from these social medias or videos from other popular websites. So people can share these videos to friends or watch offline. I have tried several tools and finally found a great one in Google Play. It is very clean and efficient. Can download all kinds of videos from all the websites and play them with built-in browser. With its boost mode, I can download it 3 times faster then other downloaders.
Please have a try:https://play.google.com/store/apps/details?id=nova.all.video.downloader