Tàng Thư Viện is an Android application developed by Tang Thu Vien that offers a vast collection of stories from various genres, including love stories, fairy tales, martial arts, science fiction, ghost stories, and historical tales, among others. With thousands of content members, the app provides readers with the latest and fastest story chapters.

The app comes with several features that enhance the reading experience, such as the ability to download stories offline, read audio, search stories quickly and accurately, and adjust the background color, text color, font, page flip or vertical scroll reading mode, brightness, and darkness. Additionally, readers can comment and discuss with each other, save stories to follow, and save the status of read chapters. The app also provides statistics of the most viewed stories in the year, in the month, and new stories out. Plus, readers receive notifications when a new chapter is available, so they don't have to wait for hours.

Overall, Tàng Thư Viện is a great app for those who love to read and want a comprehensive library of stories at their fingertips.