Acid Rap is the second mixtape by American hip hop recording artist Chance the Rapper; it was released on April 30, 2013 as a free digital download. In July 2013, the album debuted at number 63 on the Billboard Top R&B/Hip-Hop Albums, due to bootleg downloads on iTunes and Amazon not affiliated with the artist. The mixtape has been certified "diamond" on mixtape site Datpiff, for garnering over 1,000,000 downloads.