"Wonderland" described "Living Out Loud" as "fearlessly creative", and "infectiously upbeat and uplifting". Derek Paiva of "The Honolulu Advertiser" described Stefani's show in Honolulu as "infectiously energetic". James Poniewozik of "Time" labelled Balfe's portrayal as "wry, [and] infectiously engaging". Judy Coleman of "The Boston Globe" found the song to be "infectiously manic". Jonali particularly called the single a "club-ready summer jam" and an "infectiously island-infused groove". This actor's delight in cutting loose infectiously mirrors his character's liberation from his stodgy self. Sean Maunier, from "Metro Weekly", called it an "infectiously weird track".