The ARCS 2025 Conference App is the official companion for the Association of Registrars and Collections Specialists’ biennial gathering, held November 18–21, 2025, at St. Louis Union Station. The app enhances the conference experience by keeping attendees informed, connected, and engaged throughout the event, reflecting the conference theme “PRESENT tense”—a call to collaborative and mindful action in caring for collections today to sustain them for the future.