"('Cause) I'm Your Girl" features rapping by Eric and Andy prior to their debut with Shinhwa.

[8] In a survey involving 30 experts and 2,000 people published by The Dong-a Ilbo in September 2016, "('Cause) I'm Your Girl" was voted the third best female idol song by music experts and the seventh best female idol song among the public in the past 20 years.

[9] In 2014, webzine Music Y included "('Cause) I'm Your Girl" in their list of 120 Best Korean Dance Tracks of All Time at number 45, with critic Hong Hyuk-soo noting the song's "melodic simplicity and completeness" as well as the "neat arrangement and chorus, well-ordered characters and choreography" having been passed down to future generations as a textbook girl group song.

[12] In Melon and Seoul Shinmun's 2021 ranking of the Top 100 K-pop Songs of All Time, "('Cause) I'm Your Girl" placed at number 17, where music expert Lee Kyu-tak wrote that it "occupies a very important part in the history of K-pop, both in terms of the impact it had on the music world at the time of its release and the influence it had on future generations."

Lee commented that along with H.O.T's "Descent of Warriors" and "Candy" (1996), "this song marked the beginning of K-pop and an important turning point that put SM Entertainment, the agency, in its current position.