Fast Saver is a free Android app developed by Jinguo team, categorized as a Lifestyle app. It allows users to save HD videos and play them offline with its built-in player. The app supports all download formats, including mp3, m4a, mp4, m4v, mov, avi, wmv, doc, xls, pdf, txt, and more.

With Fast Saver, users can easily download their favorite videos and watch them anytime, anywhere without worrying about internet connectivity. The app's built-in player allows for seamless playback, and users can also choose to share their downloaded videos with friends and family.

Overall, Fast Saver is a simple and effective app for those looking to save and play videos offline on their Android devices. Its user-friendly interface and support for various download formats make it a great choice for anyone who wants to keep their favorite videos on hand.