On Auga few images from the music video shoot were released online. Mike Pizzo of Las Vegas Weekly praised his sound, but was not thrilled towards its lyrical content saying 'it’s hard not to nod your head to the cheesy ’80s grooves of “ Fine by Me” or “Zero,” even if the message is endlessly eye rolling.' Jesse Cataldo of Slant Magazine praised the song saying that '“Zero” similarly has a pretty good neo-disco aesthetic, with warm synth washes and some genial Vocoder noodling, things that remind works from Daft Punk's Random Access Memories'. Marcus Dowling of HipHopDX said that the song and 'No Filter', another song from Royalty, 'pack in all of the aforementioned Rodgers’ chugging grooves from Chic’s “ Good Times,” David Bowie’s “ Let’s Dance” and Daft Punk’s “ Get Lucky” into one production'. AllMusic editor Andy Kellman called the song a 'disco-funk throwback replete with talkbox', noting some irony in writing, recording, and releasing a song bragging about not thinking of an ex. 'Zero' received positive reviews from music critics. RCA does not give attribution for the song's artwork. The layout is practically identical with only minor variations such as skin tone. The cover artwork is similar to artwork used in the 1985 manga City Hunter. Some critics speculated that the lyrics were dedicated to Brown's ex-girlfriend Karrueche Tran. Lyrically, in the song Brown sings about how he does not care about his break up with his ex-girlfriend, as he sings, 'Ask how many nights I've been thinking of you, zero'. A factor that is reminiscent of Daft Punk songs is the presence of a robotic voice edited with the vocoder in some parts of the song. The funk elements are heard in the bass line and in the rhythm of the electric guitar in the chorus. The song was compared by some critics to the work of American band Chic and French electronic music duo Daft Punk.

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