MyShake 4+

Earthquake Warning California

University of California, Berkeley

Designed for iPhone

    • 3.0 • 1.3K Ratings
    • Free

iPhone Screenshots


Now issuing earthquake early warning alerts in California, Oregon, and Washington!

Key Benefits:

-- Prepare, survive, recover with earthquake alerts for large damaging quakes
-- Set a default alert location using HomeBase
-- Set up custom notifications to know when loved ones are affected by a quake
-- Be a citizen scientist and help measure earthquake motion
-- Safety tips
-- Get earthquake ready and help your community.
-- Share your experience with others after a quake
-- Available in English, Spanish, Chinese Traditional (繁體中文), Filipino, Korean (한국인), and Vietnamese (Tiếng Việt)

The MyShake app -- developed by the UC Berkeley Seismology Lab, sponsored by the California Governor’s Office of Emergency Services -- was the first app powered by ShakeAlert® to provide statewide earthquake early warning alerts in California. The app is one of the delivery modes of the California Earthquake Early Warning System.

MyShake provides earthquake early warnings in California, Oregon, and Washington for estimated magnitude 4.5 earthquakes and higher to phones in the light- heavy shaking areas. Alerts will not go out for all felt events, just damaging ones.

Learn more at

What’s New

Version 3.1.12

- Better UI for iPads
- Update to Homebase UI
- Update to Accessibility
- bug fixes

Ratings and Reviews

3.0 out of 5
1.3K Ratings

1.3K Ratings

th3 t3ster ,

Promising but slow/ laggy

Seems like it could be a great app, I personally don’t understand the point of using and or showing the user the x y and z axis change of the phone. But that’s not really the issue here, might just be me but running iPhone X and it seems to freeze for a while whenever I click on a specific earthquake to see more info about it.

Edit: seems to only be freezing on ones that happens around a day or so ago, when I clicked on one that happens 20 mins ago it worked fine but the one that happens in pleasant hill a day or so ago (aswell as others ) it freezes.

Edit 2: the app now shows an earth quake in the pinnacles, CA as 3.5 however yesterday it showed as a 3.6 and when I click on the 3.5 it then shows 3.6 at the bottom.

Developer Response ,

Hi there, are you speaking about the x, y and z axis on the sensor? If so, that's a tool we have built in the app to show how an earthquake's motion is an all-around impact instead of "up and down" or "side to side." Also, this built-in sensor collects data when in stationary mode and contributes to our global seismic network. As for the frozen screen, we're very sorry for this inconvenience. Currently, we're experiencing a data overload for the recent earthquake which explains why the app is frozen as you try to report it. The Developers are working hard to find a fix, we appreciate your patience at this time. Thanks!

Omar 9292 ,


Living in Mexico city we had something like this for a while . But now I live in Los Angeles California and I don't know how people in the US are gonna react when they get the warning a strong earthquake is coming because people In Mexico are already use to getting them alerts that say "Strong earthquake is coming " since they have so many strong earthquakes and an early warning on their phone and they had them for a while . So since this is gonna be new to people in the US who knows how they gonna react ! Also I think we need the Alarm. I know that they have them were they have tornadoes in the US .But in Mexico city when u get the notification on your phone the Air raid siren also goes on really loud all over the city the first time I had no idea what was happening I tought a war was happening when I heard the alarm all over the city till I saw everyone running outside and they were screaming earthquake and sure enough 30 seconds later BAM strong earthquake hit . They should have those in California not only in places were they have tornadoes so people can have time to go hide ! I saw it helps they had about 30 seconds to get outside .

Developer Response ,

Hi, we're happy that you are thrilled with our app as well. We thank you for your suggestion and happy downloading!

EEandSW ,

Switched to this app = better!

Switched to this app from another earthquake app and this is better since it allows a home base to be set. Yes there is a sw bug that the app doesn’t seem to do anything after setting the home base, but if you go back through the settings the home base has indeed been set. Home base is essential to me since I run with location tracking off to save battery capacity. I run with a VPN so we’ll see if the app works with that. It would be great if there was a test mode that would allow a user to verify notification and trigger off any earthquake of any magnitude 3.5 or greater in California, Oregon or Washington.

I would also like a notification of ANY deep earthquake on the Cascadia subduction zone in case there are any precursor earthquakes providing early warning.

App Privacy

The developer, University of California, Berkeley, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Location
  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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