[2] They began writing songs for Blue Rev almost immediately after the release of Antisocialites, but several events occurred which delayed the progress of the album: a thief broke into lead singer Molly Rankin's apartment and stole a recorder with several demos contained on it, and the day after, a basement flood threatened to destroy all of the band's gear.

[5] "Pharmacist" balances the band's signature indie-pop sound with prominent shoegaze elements,[6][7] including guitar distortion and "dreamy" vocals by Molly Rankin.

Reviewing the album for AllMusic, Tim Sendra declared that, "the songs are memorable and fun, the performances are inspired, and the production is varied and always interesting," and that "the result is a heavenly indie pop hit guaranteed to make their already besotted fans fall even more head over heels in love with the band.

[23] Concluding the review for Clash, Bella Savignano called the album, "a magical, twisty excursion to a crossroads where the band simultaneously reflects on yesteryear and explores the turbulence of divergent realities.

"[19] In Exclaim!, Alex Hudson stated that compared to its namesake, the album "feels less like a hyperactive buzz and more like the crushing hangover the morning after: chaotic, anxiously over-stimulated, and tinged with regretful melancholy.

"[20] Veteran critic Robert Christgau recommended the CD edition over streaming the album because of more clarity from the "shoegaze fuzz" he otherwise perceived, while noticing "how explicitly collegiate [the lyrics] were, situating Molly Rankin both culturally, in her devotion to aesthetic usages less staid than 'the lettered life' she once aspired to, and generationally, as the postgrads who populate her songs negotiate love lives they're seldom ready for".