SF Symbols is a library of iconography designed to integrate seamlessly with San Francisco, the system font for Apple platforms. SF Symbols 4 introduced over 1,000 new symbols including representations of home appliances, health and fitness indicators, currencies, and automotive symbols. New localized symbols include variants across scripts such as Arabic, Chinese, Devanagari, Hebrew, Japanese, Korean, Latin, and Thai. New features include automatic rendering which highlights the unique characteristics of symbols with additional depth and detail, unified layer annotation which provides a shared layer structure across rendering modes, and Variable Color which conveys strength or progress over time, enabling symbols to be more dynamic and expressive.