Comparison

Disaster Alert (PDC Global) vs Volcano Updates

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

Volcano Updates

Stay informed about volcanic activity with daily news and reports from multiple sources, including USGS and GeoNet. Get alert levels, aviation color codes, and detailed information on active volcanoes worldwide.

Highlights
  • Daily volcanic activity news
  • USGS Volcano Hazards Program reports
  • GeoNet news feed for New Zealand
  • Smithsonian Weekly Volcanic Activity Report
  • Alert level and aviation color code
  • Information on Hawaiian and Alaska volcanoes
Features
Read full description

Get daily news and information about recent volcanic activity from three different news sources. First, the United States Geological Survey (USGS) Volcano Hazards Program. Each Volcano Activity Report includes an assigned alert level and aviation color code as issued by the USGS, as well as details regarding current activity. Volcano Updates typically contain detailed information on the active Hawaiian and Alaska Volcanoes, as well as any new activity at Yosemite. If something is going on, the USGS update will appear here. New for Volcano Updates, support for New Zealand by way of GeoNet news feed. GeoNet is a collaboration between the New Zealand Earthquake Commission and GNS Science. The Smithsonian Weekly Volcanic Activity Report is a cooperative project between the Smithsonian Global Volcanism Program and the USGS's Volcano Hazards Program. Updated every Wednesday, It contains reports for volcanoes with new activity as well as reports for continually monitored volcanoes around the world. While not a comprehensive list of all volcanoes erupting during the week, it is a concise summary of certain volcanoes around the globe. Don't be left in the dark. Download Volcano Updates now.

Screenshots

Disaster Alert (PDC Global)4 screens
Volcano Updates4 screens

Verdict

The call

The clearest difference is ratings volume: Disaster Alert (PDC Global) at 450 against Volcano Updates's 8. Disaster Alert (PDC Global) also leads on update cadence (every 3 weeks vs every 3 months) and rating (4.2 vs 4.0). Volcano Updates's advantage is iOS requirement (13.1 vs 17.0). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Disaster Alert (PDC Global) holds the better App Store score, 4.2 against 4.0. That said, the two scores are not equally well evidenced: Disaster Alert (PDC Global) has 450 ratings behind it against 8, 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 50% of Volcano Updates's.

UpkeepUpdate frequency

Disaster Alert (PDC Global) ships an update every 3 weeks, Volcano Updates every 3 months. The most recent releases landed on October 18, 2026 and October 8, 2026 respectively.

Scorecard5 real differences · 5 level
Disaster Alert (PDC Global) versus Volcano Updates: the parameters behind the verdict, then further details
ParameterDisaster Alert (PDC Global)Volcano Updates
PriceFreeFree
Rating4.2 (450 ratings) — better4.0 (8 ratings)
Positive reviews64.0% of reviews — better50.0% of reviews
Number of ratings450 — better8
Update frequencyEvery 3 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.013.1 — better
Further details — not scored
Size150 MB2 MB
Age rating4+4+
DeveloperPacific Disaster CenterDonivan Fox

Customer experience

Disaster Alert (PDC Global)

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

Volcano Updates

All ratings8 ratings
Positive62.5%
Neutral12.5%
Negative25.0%
Written reviews14 reviews
Positive50.0%
Neutral21.4%
Negative28.6%

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

Volcano Updates

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Disaster Alert (PDC Global)

No in-app purchases

None

Volcano Updates

No in-app purchases

Questions

Is Disaster Alert (PDC Global) free?
Disaster Alert (PDC Global) is free to download, with no in-app purchases.
Is Volcano Updates free?
Volcano Updates is free to download, with no in-app purchases.
Which has better reviews, Disaster Alert (PDC Global) or Volcano Updates?
Disaster Alert (PDC Global) is rated higher. Disaster Alert (PDC Global) averages 4.2 out of 5 from 450 ratings, while Volcano Updates averages 4.0 from 8 ratings.
Do Disaster Alert (PDC Global) or Volcano Updates have ads?
Neither Disaster Alert (PDC Global) nor Volcano Updates shows ads.
Which is updated more often, Disaster Alert (PDC Global) or Volcano Updates?
Disaster Alert (PDC Global) ships an update every 3 weeks, and Volcano Updates every 3 months. Most recently, Disaster Alert (PDC Global) was updated on October 18, 2026 and Volcano Updates on October 8, 2026.

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