Iggy SZN

[7] Lasting for a duration of 3:20 (three minutes and twenty seconds),[1] "Iggy SZN" is built on "club-ready" electro handclap-based beats and heavy synthesisers.

An editor from the website Music Times compared the minimal production on the track to that of Azalea's previous single "Fancy" featuring Charli XCX (2014), writing that "It's not quite as catchy as 'Fancy,' but it is still a lot of fun.

"[12] Brennan Carley of Spin opined that the background on "Iggy SZN" was similar to works done by Diplo.

"[13] Jim Farber of the New York Daily News commented "the star doubles down on her love of 'fancy' (read: gimmicky) hooks, pitting a shrill beat, a lion's roar and a nagging synth against one another for attention.

"[14] Mike Wass of Idolator, while reviewing Reclassified, said that, "Of the trio of fuck-you anthems, 'Iggy SZN' is the most light-hearted and upbeat.

"[15] Rory Cashin of State added that the song is "built on hand claps and a deep electronic buzz, which will sound great in a high tempo Zumba class.

[19] Following the premiere of the song in the United States, "Iggy SZN" debuted at number thirty-seven on the weekly Billboard Twitter Top Tracks chart.