MyShake Earthquake Alerts, developed by UC Berkeley Seismological Laboratory, represents a significant public safety initiative that leverages the USGS ShakeAlert system to deliver early warnings for seismic events. The app serves as a critical bridge between official earthquake monitoring infrastructure and personal mobile devices, specifically targeting residents of California, Oregon, and Washington with free access to potentially life-saving alerts. The core functionality centers on delivering early warnings for earthquakes exceeding magnitude 4.5, typically providing several seconds of advance notice before shaking arrives. Beyond alerts, the application incorporates educational components including detailed earthquake safety guidelines, preparedness checklists for securing hazardous items, and disaster planning resources. A built-in seismograph feature allows users to view real-time ground motion data, adding an educational dimension to the utility. User experience varies significantly based on device settings and operating system configurations. The interface follows utilitarian design principles with clear alert screens and straightforward navigation. However, real-world usage reveals critical dependencies on proper notification permissions, particularly regarding Do Not Disturb settings and background operation stability. Multiple users report the app closing unexpectedly when running in background mode, potentially compromising its primary warning function. User feedback trends highlight both appreciation for the early warning concept and frustration with implementation details. Roma Levy's March 2025 review notes that Do Not Disturb settings prevented alarm activation during an actual earthquake, while Allison Carver's March 2025 review mentions background operation instability. Positive feedback from Geri Mars (August 2024) praises the straightforward setup process and seismograph feature, while Hokora Yinphine (November 2024) suggests interface improvements including dark mode implementation and more visible alert displays. The application demonstrates clear strengths in its integration with official seismic networks and comprehensive safety resources, though reliability concerns emerge regarding consistent alert delivery across diverse device configurations. Ideal usage requires meticulous attention to notification permissions and background operation settings. While not flawless in execution, the app represents one of the most accessible early warning systems available for West Coast residents seeking additional seconds to prepare for incoming seismic activity.