# Mustang Safe vs Fulcanelli

The clearest difference is update cadence: Fulcanelli at every 5 days against Mustang Safe's every 2 months. Mustang Safe's advantage is iOS requirement (15.6 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Mustang Safe ships an update every 2 months, Fulcanelli every 5 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Mustang Safe | Fulcanelli |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/fulcanelli/id6788643149/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | — | Free |
| Size | 29 MB | 5 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cal Poly, San Luis Obispo](https://appshunter.io/developer/491511839) | [mark hendrickson](https://appshunter.io/developer/6788643151) |

## What reviewers say

### Mustang Safe

[App page](https://appshunter.io/ios/app/mustang-safe/id6744369156)

**In-app purchases:** none


### Fulcanelli

[App page](https://appshunter.io/ios/app/fulcanelli/id6788643149)

Monitor live Earth activity including earthquakes and space weather on an interactive map. Receive daily intelligence briefings summarizing seismic and geomagnetic conditions. This app provides pattern analysis and education, not predictions.

**Highlights:** Live earthquake feed and map, Magnitude and geography filters, Space weather layers and dashboards, Daily Earth Intelligence briefings, Alert preferences

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Mustang Safe free?

Mustang Safe is free to download, with no in-app purchases.

### Is Fulcanelli free?

Fulcanelli is free to download, with no in-app purchases.

### Do Mustang Safe or Fulcanelli have ads?

Neither Mustang Safe nor Fulcanelli shows ads.

### Which is updated more often, Mustang Safe or Fulcanelli?

Mustang Safe ships an update every 2 months, and Fulcanelli every 5 days. Most recently, Mustang Safe was updated on October 30, 2026 and Fulcanelli on October 31, 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.*