tl;dr: CoMaps, an open-source offline navigation app built on OpenStreetMap data, proved critical during Venezuela's recent earthquake response, guiding rescue teams in areas without cell coverage. Shortly before the disaster, the volunteer team decoupled map updates from app store releases and cut processing time from 10 days to 3, enabling weekly global updates that incorporated buildings mapped by Humanitarian OpenStreetMap volunteers. The team now aims for region-specific updates every 12 hours to better serve disaster response.