地デジViewer R is a free multimedia app developed by SoftBank Corp.BB for Android. It is designed to provide a dedicated terrestrial digital broadcast viewing and recording application for SoftBank light/Yahoo! BB users. The app allows you to connect the terrestrial digital tuner (R) to the light BB unit/ADSL modem and view terrestrial digital broadcasting in the Wi-Fi environment. You can browse the program guide, record programs, and playback recorded programs on compatible terminals. The app also features a split-screen function that allows you to view the internet while watching terrestrial digital broadcasts.

One thing to note is that you cannot watch TV on this app alone. It is only available for customers of "terrestrial digital tuner (R)." Additionally, you will need an external HDD for recording. However, the app provides a convenient way to schedule recording from the go by connecting to a public wireless LAN. The corresponding terminals for the app are Toshiba A205SB and ASUS ME301T.

Overall, 地デジViewer R is a useful app for SoftBank light/Yahoo! BB users who want to view and record terrestrial digital broadcasting on their Android devices.