Tremor: Quake Alerts
Earthquake alerts, near you
Only for iPhone
$2.99 · Designed for iPhone. Not verified for macOS.
iPhone
Tremor is a focused earthquake monitor and notification app. See what just shook and where on a clean live map and list, then set up alerts so you're told about the quakes that matter to you — fast, configurable, and ad-free.
WHAT JUST SHOOK?
- Live map of recent earthquakes worldwide, with magnitude-scaled, color-coded markers.
- List view sorted by time or magnitude.
- Filter by minimum magnitude, depth, and time window (last hour, 24 hours, or 7 days).
- A clear "last updated" time so you always know how fresh the data is.
RICH DETAIL ON EVERY EVENT
- Magnitude and magnitude type, depth, place, and distance from you.
- Relative and absolute time, coordinates, tsunami flag, and felt/intensity values when available.
- A deep link to the official USGS event page for the full report.
ALERTS THAT FIT YOUR LIFE
- Define what you want to hear about: a minimum magnitude worldwide, quakes near a saved place within a radius you choose, or only significant/major events.
- Multiple saved places (Home, Work, Family) each with their own rules.
- Quiet hours so routine small quakes don't wake you.
- No ads, ever. The product is the value — not ad removal.
PRIVACY-FIRST
- When-In-Use location only, used to show distance and match alerts near your saved places.
- No accounts and no advertising trackers.
ABOUT THE DATA
- Seismic data is provided by the U.S. Geological Survey (USGS) and other public agencies (e.g., NOAA for tsunami information). Tremor is not affiliated with or endorsed by these agencies.
IMPORTANT — NOT AN EARLY-WARNING SYSTEM
Tremor is an informational earthquake monitoring and notification app. It reports earthquakes after they are detected and published by public data sources, so alerts may be delayed by seconds to minutes. Tremor is NOT an early-warning system (such as ShakeAlert) and is not a substitute for official alerts or emergency instructions. Do not rely on Tremor for life-safety decisions.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Tremor is quicker and more reliable:
- Live USGS data now self-heals when you're offline and reconnect.
- Distances shown in your local units (miles or kilometers).
- Smoother map with hundreds of quakes, plus better alerts and quiet-hours handling.
- Stability and accessibility improvements.
The developer, Brian Boler, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Brian Boler
- Size
- 1.2 MB
- Category
- Weather
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Brian Boler
