Comparison

Disaster Alert (PDC Global) vs Temblor

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Disaster Alert (PDC Global)

Stay informed about global natural disasters with real-time hazard alerts and impact reports. Customize warnings for your area and access visualized data from verified sources to help you stay safe.

Highlights
  • Real-time hazard alerts
  • 18 types of natural hazards
  • Customizable early warning alerts
  • Estimated impact reports
  • Visualized modeled hazard data
  • Interactive map interface
Features
Read full description

Disaster Alert is a free mobile app for public use that provides the global community with critical hazard alerts and information needed to stay safe anywhere in the world. Built on PDC’s DisasterAWARE platform, Disaster Alert offers near real-time updates about 18 different types of natural hazards as they are unfolding around the globe. With Disaster Alert, you can customize early warning alerts, view estimated impact reports, and access visualized modeled hazard data. Disaster Alert’s continuous stream of new information is automatically generated from the most reliable, scientifically verified sources. When no official source is available, alerts are updated manually by Pacific Disaster Center, presenting only a small lapse of time between the time of an event and the availability of information in the system. Hazard updates provided with Disaster Alert include only active hazards. “Active Hazards” are part of a collection of recent incidents that have been designated as potentially hazardous to people, property, or assets by PDC. INCLUDED HAZARD TYPES *Automatically processed in near real time:Hurricanes (tropical cyclones / typhoons), earthquakes, tsunamis, volcanos, floods, wildfires, U.S. tornados and winter storms. OTHER KEY FEATURES *Customizable alerts based on your geographic area of interest and hazard severity *When the map tip is activated by selecting a hazard on the map, users can get estimated impact information by choosing the "More Info" link and viewing Hazard Brief. * Interactive map interface displays 18 different types of active hazards *Customizable background maps *Map layers with overlays for population densities, global cloud coverage, and more.

About

Temblor

Understand your personal earthquake risk with detailed information and real-time global earthquake data. Receive notifications for nearby quakes and access news and analyses on earthquake science and events.

Highlights
  • Personalized earthquake risk assessment
  • Global earthquake monitoring
  • Real-time quake notifications
  • Hazard map layers (shaking, liquefaction)
  • Earthquake news and analysis
  • View global fault lines
Features
Read full description

Temblor gives individuals the tools to understand their personal earthquake risk. Temblor provides free individualized earthquake risk information to the public. It’s the same basic info that we license to the insurance industry — the difference being volume of locations and depth of the analysis. This distinguishes us from other risk model vendors (e.g., RMS, AIR, CoreLogic), which are closed to the public. “Impressive Earthquake App. Way more here than the other 'earthquake apps.'” — J.D. Check your risk Under the “Your Risk” tab, enter your home address (or a city, state or geographic landmark) or find your location and instantly see the earthquake magnitude that location is likely to experience in your lifetime. Use the map layers to explore various hazards including shaking, liquefaction susceptibility, wildfire hazard and more (depending on location). Check your risk everywhere on Earth. Pan and zoom to view all recent earthquakes anywhere on the planet. Temblor merges earthquake catalogs from the major seismic agencies around the world into one real-time display of global earthquakes in the past 24 hours, 2 days, 7 days or 30 days. View faults throughout the world or in your backyard. Quake Alerts Temblor will send you a notification when an earthquake strikes near your location. This is NOT an earthquake early warning and is not intended to inform you of impending shaking. Various agencies around the world distribute early earthquake warnings to earthquake-prone regions. We encourage you to seek out your local agency to receive such alerts. Temblor Earthquake News “Articles” brings you to Temblor Earthquake News, a news platform dedicated to earthquake reporting. Temblor’s mission is to provide the public with accurate, accessible, and understandable information about earthquakes. Read breaking news about major earthquakes, post-quake analyses and the latest developments in earthquake science in easy-to-understand language. Following major or particularly notable quakes, Temblor rapidly publishes accurate post-event analyses to inform the public and support institutional and commercial responses. Temblor is an approved Google News source and has been cited in major news outlets.

Screenshots

Disaster Alert (PDC Global)4 screens
Temblor4 screens

Verdict

The call

The clearest difference is in-app purchases: Disaster Alert (PDC Global) at none against Temblor's 1. Disaster Alert (PDC Global) also leads on rating (4.2 vs 3.8) and ratings volume (451 vs 12). Temblor's advantage is iOS requirement (11.0 vs 17.0). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Temblor sells 1 one-off in-app purchase. Disaster Alert (PDC Global) asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Disaster Alert (PDC Global) holds the better App Store score, 4.2 against 3.8. That said, the two scores are not equally well evidenced: Disaster Alert (PDC Global) has 451 ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 64% of Disaster Alert (PDC Global)'s written reviews are positive against 53% of Temblor's.

UpkeepUpdate frequency

Disaster Alert (PDC Global) ships an update every 3 weeks, Temblor every 2 months. The most recent releases landed on October 23, 2026 and October 17, 2026 respectively.

Scorecard7 real differences · 3 level
Disaster Alert (PDC Global) versus Temblor: the parameters behind the verdict, then further details
ParameterDisaster Alert (PDC Global)Temblor
PriceFreeFree
Rating4.2 (451 ratings) — better3.8 (12 ratings)
Positive reviews64.0% of reviews — better52.6% of reviews
Number of ratings451 — better12
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.011.0 — better
Further details — not scored
Size150 MB16 MB
Age rating4+4+
DeveloperPacific Disaster CenterTemblor, Inc.

Customer experience

Disaster Alert (PDC Global)

All ratings450 ratings
Positive79.1%
Neutral6.9%
Negative14.0%
Written reviews264 reviews
Positive64.0%
Neutral9.1%
Negative26.9%

Temblor

All ratings11 ratings
Positive63.6%
Neutral9.1%
Negative27.3%
Written reviews38 reviews
Positive52.6%
Neutral7.9%
Negative39.5%

Bugs and requests

Disaster Alert (PDC Global)

Reported bugs

4 issues
  • App freezes or crashes on launch
  • Notification count not clearing properly
  • Map and layers not functioning correctly
  • Login and account issues

Requested features

4 requests
  • Add GPS location and time filtering options
  • Improve notification system and customization
  • Provide more detailed and up-to-date information
  • Enhance user interface and experience

Temblor

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Disaster Alert (PDC Global)

No in-app purchases

1 purchases

Temblor

One-time1
  • Unlock Additional Notification Criteria and Remove Ad's$0.99

Questions

Is Disaster Alert (PDC Global) free?
Disaster Alert (PDC Global) is free to download, with no in-app purchases.
Is Temblor free?
Temblor is free to download, with in-app purchases available.
Which has better reviews, Disaster Alert (PDC Global) or Temblor?
Disaster Alert (PDC Global) is rated higher. Disaster Alert (PDC Global) averages 4.2 out of 5 from 451 ratings, while Temblor averages 3.8 from 12 ratings.
Do Disaster Alert (PDC Global) or Temblor have ads?
Neither Disaster Alert (PDC Global) nor Temblor shows ads.
Which is updated more often, Disaster Alert (PDC Global) or Temblor?
Disaster Alert (PDC Global) ships an update every 3 weeks, and Temblor every 2 months. Most recently, Disaster Alert (PDC Global) was updated on October 23, 2026 and Temblor on October 17, 2026.

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