Earthquake is a free app for Android devices that provides real-time monitoring of earthquakes that occur around the world. The app sources its data from several institutions, including USGS, EMSC, IRIS, INGV, CSUSP, GEONET, and more. Users can customize their notifications by setting the maximum distance from the events within which to receive them, minimum magnitude, and ringtone separately for the main events (within the set distance) and the farthest ones. The app automatically determines the current location of the device through GPS or WIFI, but users can also set their location manually. Notifications can be grouped from all sources and include sound, vibration, and silent nighttime mode. Earthquake app provides a list or map view of the data and also offers statistics on earthquakes. Overall, it is a reliable and informative app for those interested in staying up to date on seismic events.