Evaluna got her first role as a supporting character in Nickelodeon's Latin American series Grachi, playing Melanie Esquivel, the protagonist's sister.

In 2012, Evaluna's father Ricardo Montaner chose to sing the Christian ballad La Gloria de Dios (The Glory of God), in addition to taking her on the tours of Frequent Flyer Tour, which began her career as a singer.

In 2014, she played a supporting role in the movie Hot Pursuit as Teresa Cortez, a teenage girl who has her 15-year-old party, shared the screen with stars Reese Witherspoon and Sofia Vergara.

In July 2014 Evaluna participated in the Christian festival held in Argentina called Jesús Fest where she presented her single, "Yo me salvé" (I Saved Myself), which would be released at the end of 2014 with its English version titled "Wings" and its respective videos.

Her character, Eva, is a lover of science and mathematics who becomes trapped in 1957 with her brother Rubén (Sebastian Silva).