1. Disaster Alert
Developed by the Pacific Disaster Center (PDC) in Hawaii, the United States, the app allows users to search disaster points that are happening, such as earthquakes, tsunamis, volcanic eruptions, storms, landslides, floods and forest fires. In fact, this application can even track the spread of a virus outbreak.
[...]
2. Info BMKG
The Meteorology, Climatology and Geophysics Agency (BMKG) has its own official app named "Info BMKG", which offers features such as earthquake notifications, early warning weather alerts and up-to-date related information from the BMKG.
[...]
3. QuakeFeed Earthquake Alerts
Upon opening the app, users will be shown what is happening on the Ring of Fire map. They can track the list of recent earthquakes and enlarge the map to find out exactly where the disaster occurred.
The app provides information about an earthquake that occurred close to the user's location as well as information about an earthquake that is happening in a particular area, according to what the user wants to see.
[...]
4. QuakeAlert
This app has only entered Early Warning Labs’ trial phase. Currently, it can only be used in beta format in the US. QuakeAlert is said to be able to inform users of an earthquake before it occurs, with up to 20 seconds early warning prior to the earthquake.
[...]
The Early Warning Labs server will calculate each warning for each user, with information on an earthquake that is adjusted to personalize the shock time and intensity.
[...]
5. Safety Tips
With this app, tourists, who travel to Japan, will have easier access to information about earthquakes, tsunamis, volcanic eruptions and weather forecasts. Safety Tips will track the GPS location on the user's mobile phone and send notifications about the earthquake.