Documentaries Free is a free app that can play and download documentaries on your Android device. It's the best way to view and manage your favorite movies and videos on the go.

There are many categories to choose from, such as world history, space, science, politics, business, wars, the 9/11 World Trade Center videos, social issues, and more. It can also download new content for you to watch later. It's so simple and intuitive to use.

The best thing is that it's free to download and watch. All you have to do is install it on your device and start watching.