Nugget for iOS primarily refers to a powerful, non-jailbreak device customization tool for iPhones and iPads running specific iOS versions (often 17.0 and later). It utilizes exploits like SparseRestore to enable unsupported or hidden features, such as the Dynamic Island on older devices, Always-on Display, custom status bar elements, animated wallpapers (PosterBoard), and various internal system tweaks.

Functioning largely via a command-line interface (CLI) on a computer or a simplified "Mobile" version, Nugget allows users to unlock their device's full potential without traditional jailbreaking. It provides deep control over system settings for personalization and feature activation, effectively bypassing typical Apple restrictions for advanced users.