Global Seismic Data vs QuakeLink

The official Global Seismic Data app. Earthquakes are a global hazard which pose a threat to life and cause significant business interruption and social upheaval. Protect lives and reduce recovery costs by using our Structural Health Monitoring System. Visit www.gsdhq.io for more information. App features: • Structural Health Monitoring service for our customers • View large datasets of earthquakes and aftershocks • Receive customised notifications for earthquakes • Send felt reports or ‘I am safe’ messages to family/friends after an earthquake occurs

QuakeLink is a free, offline emergency communication app designed for earthquakes and disaster situations. When internet and cellular networks are unavailable, QuakeLink helps people nearby find each other, send emergency messages, and stay connected when every second matters. OFFLINE EMERGENCY COMMUNICATION • Send short emergency messages without internet using nearby devices • Press and hold the emergency button with loud whistle and SOS flashlight pattern • Predefined quick messages such as SOS, I am safe, and Need help • Designed to work even when mobile networks fail FIND NEARBY PEOPLE • Discover nearby devices using peer-to-peer communication • View approximate distance and direction when supported by the device • Automatic fallback when advanced hardware features are unavailable • Built for real-time awareness during emergencies EARTHQUAKE INFORMATION • View recent earthquakes from reliable public data sources • Filter by region and minimum magnitude • See earthquake locations on an interactive map • Access key details such as magnitude, depth, and time DESIGNED FOR RELIABILITY • Optimized for low battery usage during emergencies • Automatic behavior adjustments when battery is low • Clear and simple interface focused on critical actions PRIVACY BY DESIGN • No account required • No tracking or advertising • Messages are processed locally and stored securely on your device • Core emergency features work without an internet connection BUILT FOR REAL EMERGENCIES QuakeLink is designed to be simple, fast, and dependable when it matters most. It is not a replacement for official emergency services, but a complementary tool designed to assist people during emergencies. Free to use. No ads. No accounts.