R Channel is a completely free video streaming service operated by Rakuten Group Inc. The app offers a wide range of content across various genres, including anime, movies, news, sports, music, K-POP, Asian dramas, railway, and kids shows. With around 45 channels, R Channel is one of Japan's largest linear video streaming services. The app also provides on-demand content and catch-up TV for free.

One of the unique features of R Channel is that it is completely free, and users do not need to register to access the content. The app has a follow feature that allows users to follow their favorite channels and filter programs based on the program schedule. Users can also set reminders for upcoming programs and search for programs by genre, keywords, or strings. R Channel also offers a share function that allows users to share their favorite programs on social media. The app provides a maximum of 15 keywords for the user to search for their favorite programs, and users can watch as many programs as they want, whenever they want.