[2] Furthermore, Billboard stated that the "track picks up and drops momentum frequently", allowing it to highlight the different singing styles of each member of Loona.
[7] Hong Dam-young's album review in The Korea Herald remarked that "Hi High" is fast-paced with a "vivacious tempo and explosive vocals.
They ended their review by commenting how "Hi High" is simply the kind of song that leaves you giddy with happiness every single time.
[9] "Hi High" peaked at number 11 on the US World Digital Songs Sales, marking their second consecutive entry on the chart as a full group.
[11] The video also features the members wearing denim as they perform a routine in an industrial yard, while other scenes see the girls running through meadows, on swings, and jumping off roofs.