The different fonts in the Why Square family are an extension of the designs begun in Zoran Kostic’s Just Square family.

Why Square’s lowercase letters are all more condensed versions of Just Square's letters, and in some of the fonts, the uppercase letters are wider. The first five fonts are the different weights of Why Square (UltraThin, UltraLight, Thin, Light, and Regular). Here, all of the characters--both upper and lowercase--are more condensed versions of the geometric letters from the Just Square family.

The next five fonts (UltraThin, UltraLight, Thin, Light, and Regular weights) include identical lowercase letters to those from the first five fonts in the family, but their capitals are considerably wider. These may be used as initials, either with the other fonts in the Why Square family, or with the Just Square family.