Once Duff's management declined the offer, XCX decided to use the song as her contribution to The Fault in Our Stars motion picture soundtrack.

[10] In January 2015, "Boom Clap" was ranked at number eight on The Village Voice's annual year-end Pazz & Jop critics' poll.

"[11] The song debuted at number 62 on the Billboard Hot 100 on the week dated 21 June 2014, becoming XCX's first entry as a lead artist.

[17] The accompanying music video for "Boom Clap", directed by Sing J. Lee, was filmed in Amsterdam and premiered on 2 June 2014.

[18][19][20] The video features brief clips from The Fault in Our Stars set to the song as well as on-screen text written in the style of the book cover and film poster.

An alternative music video for the song, directed by Kazuya Murayama, was filmed in Tokyo and premiered on 29 October 2014.