Show HN: An offline-first nuclear survival iOS app–EPA RadNet,140 stations

This app prepares you to survive during nuclear wars. Motivation: save people. Core Feature(coming soon): offline chat with nearby iOS devices using Multipeer Connectivity Framework. 1. Disaster Alerts: API from authorities like NOAA + FEMA IPAWS 2. Live Radiation Map: EPA RadNet, 140 official U.S monitoring stations network, all 50 states 3. Offline-first: Built to function when there's no internet