In addition to the main genres, the song draws from a diverse set of musical styles including Afrobeats, dancehall, Europop, disco and sophisti-pop.

Its production consists of Afropop-influenced percussion, fuzzy synths, a kick drum pulse, electric guitars, vocal samples and piano stabs.

Upon release, "TooTimeTooTimeTooTime" received positive reviews from contemporary music critics, who praised the song's playful lyricism, upbeat production and sonic experimentation.

[1] Speaking with Sam Sodomsky of Pitchfork, Healy said that he wanted to celebrate the band's musically varied discography, condensing the track into a pop song, which he admitted felt counterintuitive.

[3] Musically, "TooTimeTooTimeTooTime" is an electropop and synth-pop song that is built around a soft, insistent four-on-the-floor tropical house beat,[4][5] running for a length of three minutes and 28 seconds (3:28).

[9] Pyror Stroud of PopMatters noted the song contains a "sheer, implacable momentum" that continuously builds before culminating in a climax that he deemed "the closest [the 1975] has come to pure pop perfection".

[3] Rolling Stone writer Ryan Reed commented that "TooTimeTooTimeTooTime" discusses "how social media fuels jealous head games and romantic angst" through suspicious text messages, missed phone calls and Instagram interactions.

[9] Tiana Timmerberg of Radio.com viewed the core thematic story behind the song as a tale of love and desperation,[20] a sentiment shared by Billboard writer Chris Payne, who wrote that the track "captures [Healy's] side of a back-and-forth with a romantic partner [...] Both parties appear to be getting into the same kind of mischief.

[21] Similarly, Philip Cosores of Uproxx observed a blend of retro aesthetics with contemporary sonics, exemplified by its use of both Auto-Tune on Healy's vocals and pulsing rhythms evocative of Peter Gabriel.

[22] Jordan Sargent of Spin said the song "bends even further back towards the unnaturally gleaming, synthetic concoctions of European balearic dance music and dancehall".

She praised the upbeat groove, lyrical exploration of anxiety and balance of sonic experimentation with a continued focus on the album's core theme of relationships in an online world.

[23] Stereogum writer Ryan Leas commended "TooTimeTooTimeTooTime" for successfully infusing contemporary pop music trends into the 1975's signature sound, opining the song "uses texting and hints of infidelity and jealousy to create an infectious, number-based hook".

[16] Conrad Duncan of Under the Radar highlighted the song as an example of the album's "countless moments of inventive vision", saying it "jettisons the band's usual verbosity for a sharp pop crossover".

He also commented that despite not being as lyrically complex as "Love It If We Made It", the song is emblematic of Healy's writing style, which he described as "knowing, insecure, romantic, flawed, and cocky at the same time".

[14] In her review of A Brief Inquiry into Online Relationships for The Ringer, Lindsay Zoladz acclaimed the song for being able to "capture, so pithily, the surreal links between body and machine, technology and emotion, that now dictate ordinary life".

[29] Shannon Cotton of Gigwise highlighted the same couplet, viewing it as a reference to the Instagram "generation" where "friendships are determined by who's liked your latest pre-night out mirror selfie rather than anything substantial or tangible".