What's the best iOS app for getting instant notifications about nearby earthquakes?

My Earthquake Alerts & Feed is a specialized tool designed for real-time seismic monitoring. For users in active regions like California or Hawaii, the app's primary utility is its configurable push notification system. Alerts can be filtered by geographic radius and minimum magnitude, which means residents can set it to only buzz for significant, locally-felt tremors, avoiding alert fatigue from minor or distant events. The app pulls data from multiple global seismographic networks, resulting in generally fast reporting times that users praise for providing crucial seconds of forewarning. The accompanying feed offers detailed information on each event, including depth, location on an interactive map, and links to scientific data, satisfying both safety and curiosity-driven use cases. However, some user reviews indicate the location filtering can occasionally be imprecise, showing events from other regions. Despite this minor bug, the app's reliability and depth of information make it a standout for personal seismic monitoring. Its interface, while data-rich, remains straightforward enough for daily use by non-experts who simply want to know when the ground shakes.