Calc OS is a powerful, highly customizable, all-in-one calculator application built specifically for Android. It goes far beyond standard math, offering a complete suite of tools including multi-mode calculators, 15+ converters, global time, a dictionary, and an integrated AI Math Assistant powered by advanced LLM technology. Wrapped in a beautiful Material Design 3 (Material You) interface, it allows users to deeply personalize their experience with dynamic color palettes, custom Google Fonts, and adjustable button shapes — all while maintaining native performance through a single-file architecture.