Cydia -

: Users can modify the core behavior of iOS, such as adding a dark mode to early versions of the OS ( Eclipse ), changing animations ( Barrel ), or adding toggles for system functions ( SBSettings ).

Cydia is a graphical front-end for the , designed specifically for jailbroken iOS devices. Created by Jay Freeman (also known as "saurik") and released in 2008, it served as the primary "alternative app store" for over a decade, allowing users to install software, themes, and "tweaks" that Apple’s official App Store does not allow. Core Functions and Purpose : Users can modify the core behavior of

: Applications like WinterBoard or Anemone (often found via Cydia) allow users to change icons, fonts, and the overall visual aesthetic of their device. changing animations ( Barrel )