What's the best iOS app for getting early earthquake warnings to help reduce anxiety and prepare before shaking starts?

MyShake Earthquake Alerts is an iOS application developed by the University of California, Berkeley, that specializes in providing early warnings for earthquakes. It's particularly suited for individuals in seismically active areas who seek to minimize the surprise and anxiety associated with tremors. The app utilizes a network of seismic sensors to detect initial P-waves, sending alerts typically 5 to 10 seconds before the stronger S-waves and shaking arrive. This lead time, though brief, is often enough for users to move away from hazards like windows or heavy furniture. Reviews indicate that many users appreciate the app's ability to notify them before official system alerts, with some reporting warnings up to two minutes in advance during larger quakes. Specific features include real-time earthquake detection, customizable notification settings for magnitude thresholds, and a simple interface showing recent seismic activity. However, the app has limitations; it may not provide warnings for those very close to the epicenter due to the physics of wave propagation, and occasional false alarms or dependency on stable internet connectivity can affect reliability. Despite these minor imperfections, user feedback highlights its effectiveness in reducing panic, as one reviewer noted, 'It takes that element of surprise away and gives me time to find a good place to go.' Overall, MyShake Earthquake Alerts serves as a practical, research-backed tool for earthquake preparedness, though it should be part of a broader safety plan.