# Disaster Alert (PDC Global) vs Volcano Updates

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.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

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.

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.

## The numbers

| Metric | Disaster Alert (PDC Global) | Volcano Updates |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (450 ratings)](https://appshunter.io/ios/app/disaster-alert-pdc-global/id381289235/reviews)** | [4.0 (8 ratings)](https://appshunter.io/ios/app/volcano-updates/id579718608/reviews) |
| Number of ratings | **450** | 8 |
| Positive reviews | **64.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free | Free |
| Size | 150 MB | 2 MB |
| Requires iOS | 17.0 | **13.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Pacific Disaster Center](https://appshunter.io/developer/381289238) | [Donivan Fox](https://appshunter.io/developer/1454172083) |

## What reviewers say

### Disaster Alert (PDC Global)

[App page](https://appshunter.io/ios/app/disaster-alert-pdc-global/id381289235)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- ⭐ Accurate and detailed information
- 🌍 Comprehensive global coverage
- 👍 Informative and useful app
- 📊 Provides situational awareness

**What reviewers complain about**

- 🐛 Bugs and glitches after updates
- 🔍 Difficult to navigate and use
- ⏱️ Slow loading times
- 🔒 Forced account creation to access features

**Reported bugs**

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

**Requested features**

- 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

[App page](https://appshunter.io/ios/app/volcano-updates/id579718608)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*