Nativ combines two jobs that are usually separate: changing hard-to-find Mac settings and troubleshooting everyday problems. It offers 41 reviewed settings through one plain-language palette, verifies every change, and supports Undo. Diagnostics, history, and optional model inference stay on the Mac – without accounts, telemetry, or a backend. Nativ never generates executable commands, clearly says when it cannot safely fix something, and expands automatic repairs one reviewed fixer at a time.