Our news articles provide rapid, scientifically sound but easily understandable insights about earthquakes as they occur around the world. We also write about discoveries and breakthroughs in the Earth Sciences. Temblor is a credited Google News source, and is frequently cited in major news outlets.

Our Earthquake Forecast gives the largest likely earthquake in your lifetime, everywhere on Earth, based on your location. Technically, it is the earthquake magnitude that has a 1% chance per year of occurring within 100 km of your location. We also show active faults in 80 countries, and worldwide earthquakes in the past 30 days, which can be filtered by time period and magnitude.

Our Earthquake Score takes into account all earthquakes near and far, large and small, plus very approximate information about your home’s seismic resilience. It is provided everywhere on Earth. A score of 100 means that over a 30-year period, you are most likely to lose 20% of the value of your home or building to seismic damage.

In the U.S., we estimate your home or building’s most likely financial losses and repair time, and the chance of injury, in the largest likely earthquake that could affect you. This calculation finds the USGS scenario earthquake that produces the strongest shaking at your location, and then accesses data to estimate your home or building’s fragility.

In the U.S., Temblor also lists participating insurance agents, retrofit contractors, quake prep consultants, insurance alternatives, structural engineers, and structural products manufacturers. There is a click-to-call button for all of these providers near you.

What’s New

Version 4.0

You can now register without a password via an unlock code sent to your cell phone. You don’t need to enter it again as long as you do not logout. 

We now provide more complete and more valuable seismic risk information for your home or building, with the repair cost in the largest likely earthquake—with and without seismic retrofit, and with and without earthquake insurance at various deductibles. This is something insurance company calculate but do not show to buyers.

We have implemented a more comprehensive algorithm for the Earthquake Score. It now takes into account whether you are in a liquefaction, landslide, or fault zone.

Our new earthquake catalog merges events from a dozen seismic networks around the world, and tags the events as either mainshocks or aftershocks. You can filter the catalog by time period and magnitude, and zoom or pan the map, with a corresponding clickable table.

We now provide push notifications for moderate or larger earthquakes near you.

The app now includes our news articles, which were previously in a separate website. We now are registered to assign DOI numbers, so that the articles are searchable in Google Scholar and their scientific citations are tracked.

Ratings and Reviews

3.0 out of 5
2 Ratings

2 Ratings

TheGadgetinator ,

Add this feature please

This is a nice app but what it really needs is the ability to utilize the iPhone accelerometer to detect earthquakes and automatically share that data to the cloud and/or the USGS.

Only when enough similar readings are detected from a certain region within a narrow timeframe would the data be considered legitimate and then be pushed back out to the map for all users to view.

The app could also be active only at certain times of the day/night that the user defines. As well as only be active when connected to pre-defined wifi networks. Such as Home or work.

Another option would be to only take accelerometer reading when it is plugged into power (such as when on your night stand or connected to a computer USB).

The app could also use the iPhone GPS to disable sensor reading when moving. As well as only record seismic data when the app detects the iPhone is laying flat on its back.

Another option would be to disable the seismic sensor data output when a face is detected with the front facing camera.

Requiring the app to be running in the foreground would also further prevent false readings.

This could easily, quickly, and cheaply create a huge network of seismographs around the world.

Arias74 ,

Love love love it!

I love that the app gives me recents earthquakes around my area and my hazard risk of my home. I also like that the people who came up with this app are scientist so the information is coming from a creditable source. I went to the actual website and they have tons of blogs on recent earthquakes so I can understand more and not just have news but actual earthquake info in detail! Can't wait until next update.

Chronodrago ,

The core features don’t work

For some reason, the interface for me doesn’t even resemble what the screenshots show. Few examples: quake insights section is empty/blank, I can’t see any fault lines, fault zones don’t display, and there isn’t anything displayed regarding risk or retrofit costs.

The legend box displays and layers do show their corresponding key in the legend box, however, no data is displayed on the map. Sometimes the map changes zoom level depending on the layer I selected, but I might as well just use Apple Maps for the basic functionality I’m getting out of this app - i.e. satellite view...

Good thing you have a web interface that can display relevant data for me. Even that works only half the time, though, randomly returning me to an Access Denied screen every few minutes while I try to browse and modify various risk assessment options.

What gives? Happy to update review rating if you can help me get this working.


Temblor, Inc.
22.5 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© Temblor, Inc
In-App Purchases
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  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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