It was written and produced by Furtado, Tim "Timbaland" Mosley, Nate "Danja" Hills, and Nisan Stewart, with vocal production by Jim Beanz.

While working with Timbaland and Danja at The Hit Factory in Miami, Florida, Pharrell Williams introduced Furtado to reggaeton, a musical genre that was unfamiliar to her.

A music video for the remix of "No Hay Igual" with Calle 13 was shot in La Perla, San Juan, Puerto Rico.

[2] In an interview with MTV News, Furtado joked: "Supposedly it was Pharrell's idea for me to work with Tim [...] Jimmy Iovine, the head of my record label [Interscope], might beg to differ.

[6] It was recorded, mixed, and engineered by Demacio "Demo" Castellon at The Hit Factory Criteria in Miami and Thomas Crown Studios in Virginia Beach.

James Roach, Kobla Tetey, Ben Jost and Vadim Chislov acted as second engineers to the song.

[10] Stephen Thomas Erlewine of Allmusic wrote that in the song, Furtado "plays the world traveler", where she deftly blends reggaeton and M.I.A.

[13] Allmusic's senior editor Stephen Thomas Erlewine picked it as one of the best tracks on the album, alongside "Maneater", "Promiscuous" and "Te Busqué".

[11] Robert Christgau wrote a positive review for The Village Voice and said that the song "might accomplish God's great plan on the dance-floor.

"[16] John Murphy from MusicOMH perceived that it has "a similar vibe to Gwen Stefani's Hollaback Girl– after a while it proves a bit annoying, but it's catchy enough.

"[17] A music video for the remix of "No Hay Igual" was filmed on June 26, 2006, in La Perla shantytown located in San Juan, Puerto Rico.