RSS Prarthana (Lyrics-Audio) is an Android application developed by Apps Useful, available for free in the Education & Reference category under the subcategory of Books. The app is a compilation of the Rashtriya Swayamsevak Sangh's prayer, Namaste Sada Vatsale, which is sung in all programs of the Sangh. The prayer is in Sanskrit, except for the last line, which is in Hindi.

The application allows users to listen to the audio of the prayer, as well as read the lyrics in both Sanskrit and Hindi. The app's user interface is simple and user-friendly, with easy navigation to switch between the audio and lyrics. Overall, RSS Prarthana (Lyrics-Audio) is an excellent resource for those who wish to learn or practice the Namaste Sada Vatsale prayer.