Aditya Music marketed the soundtrack album. Karthik Srinivasan of "The Hindu" said the song "Meghaalu Lekunna", "sounds at best like the Telugu version of a song by the Hindi pop band Euphoria", that the tune is "similarly lush and folkish", and that Prasad does "some interesting things in the interludes—the use of violins and solo-violin in the first and second interludes, to be specific". Madhavi Tata of "Outlook India" called Prasad's music, particularly "Love Cheyyala Vadda" ("To love or not to"), a "winner". "The Times of India" gave the soundtrack 2 stars out of 5 and said the album "falls desperately short" of the standards expected from Prasad. The reviewer called "Meghaalu Lekunna" a "beautiful and melodious track, courtesy the tantalising acoustic guitar, violin and flute sounds", and praised Nisar's rendition of it. "Kumari 21F" was released worldwide on 20 November 2015; its release clashed with those of "Cheekati Raajyam" (the Telugu version of the Tamil film "Thoongaa Vanam") and the 24th James Bond film "Spectre". "Kumari 21F" was released in 350 screens in Andhra Pradesh and Telangana, 50 screens in other parts of India, and 90 screens in international markets. Abhishek Pictures acquired the theatrical distribution rights for the Guntur, Krishna, East, West and Nellore areas. Dil Raju acquired the theatrical rights for the Nizam region. New York City-based company Creative Cinemas acquired the film's United States theatrical distribution rights, making it their debut in film distribution in the international market. The film was screened in 22 screens across Tamil Nadu, including 12 in Chennai. It received an "A" (Adults only) certificate from the Central Board of Film Certification, which asked the makers to trim a lip-kissing sequence and mute several objectionable lines of dialogue, and suggested a few cuts. Regarding the Board's decision against unrestricted viewing, Sukumar said, "Even a father was once a young boy. I think this story gives him the space to both identify with his feelings as a young man and to understand what his son or daughter might be going through". One of the first-look posters released in October 2015 was alleged to have been plagiarised from the Russian magazine "Chai-llot".