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MyShake Earthquake Alerts

Chrome extension by UC Berkeley Seismological Laboratory · Lifestyle · News

A Chrome extension in Lifestyle · News with 10 000 users, an established extension.

Specific sites only: 1 match pattern.

What the developer says, and 2 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
10 000
Rating
5.0 (1 ratings)
Users, last 18 days
unchanged
Rating, last 30 days
Not watched long enough to say
Version
1.1.20
Updated in the store
2026-09-09
Published
2024-07-01
Manifest
V3
Browser access
6 permissions, 1 site pattern

How it has moved

Users
unchanged since 01.09
10k · 2 readings
2026-09-10: released 1.1.20
  1. 2026-09-0110k
  2. 2026-09-1810k
Rating
unchanged since 01.09
reviewsrating 5.00 · 2 readings
2026-09-10: released 1.1.20
  1. 2026-09-01reviews1rating5.00
  2. 2026-09-18reviews1rating5.00
Users
unchanged since 01.09
10k · 2 readings
2026-09-10: released 1.1.20
  1. 2026-09-0110k
  2. 2026-09-1810k
Rating
unchanged since 01.09
reviewsrating 5.00 · 2 readings
2026-09-10: released 1.1.20
  1. 2026-09-01reviews1rating5.00
  2. 2026-09-18reviews1rating5.00

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

Specific sites only: 1 match pattern.

  • *://*.myshakeapp.org/*
  • Read your location geolocation
  • Schedule work to run later alarms
  • Keep running while the browser is open background
Show the remaining 3
  • Show you notifications notifications
  • Run work in a hidden page offscreen
  • Store data in your browser storage

The full permission history for this extension

Version history

  1. Version 1.1.20 · Asked for more permissions (7, was 5)

What changed recently

  1. Package size changed
  2. Asked for more permissions (7, was 5)
  3. Released version 1.1.20 (was 1.0.13)

The publisher

UC Berkeley Seismological Laboratory.

Like this one

Listings the catalog judges closest in what they say they do.

  1. Earthquake Today - Realtime Alerts Describes nearly the same job, smaller audience 265 users ★ 5.0
  2. JQ Alert Describes nearly the same job, smaller audience 1k users ★ 3.8
  3. Earthquake Early Warning System Describes nearly the same job, smaller audience 2k users ★ 3.9
  4. P2P地震情報アラート Describes nearly the same job, smaller audience 101 users
  5. Earthquake Monitor Describes nearly the same job, smaller audience 22 users

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

Is this your extension?

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

See what the panel does

Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.