OpenCourseWare Companion is an unofficial application that provides access to MIT's OpenCourseWare content. The app is designed for Android 5.0 or higher, and it is available for free. The application is created by an enthusiast under the Creative Commons BY-NC-SA 4.0 license and is not endorsed by MIT. The app is a handy tool for browsing through MIT OpenCourseWare resources and downloading assignments.

The application provides access to almost all of MIT's course content, including videos, lecture notes, and assignments. Users can browse through the course catalog, search for specific courses, and download content for offline use. The app also allows users to bookmark their favorite courses and access them quickly. The interface is user-friendly and straightforward, making it easy to navigate and find the desired content.