Visualize real-time geomagnetic field data from global observatories. Monitor total intensity and vector components of Earth's magnetic field. The app efficiently caches data for offline use and is free and open-source.

250+ iOS apps curated and reviewed
Geomagnetic Observatory is the household name in geomagnetic observatory, but it's far from the only option. We track 250+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 5.0★ (1) | No | No | Sep 2026 | ||
| 2 | Free | 4.0★ (47K) | No | No | Oct 2026 | ||
| 3 | Free | 4.6★ (82) | Yes | Yes | Oct 2026 | ||
| 4 | Free | 2.0★ (3) | Yes | Yes | Oct 2026 | ||
| 5 | Free | 4.3★ (24) | No | No | Sep 2026 | ||
| 6 | Free | 3.8★ (4) | No | No | Sep 2026 | ||
| 7 | Free | 2.0★ (3) | No | No | May 2026 | ||
| 8 | Free | 5.0★ (9) | Yes | Yes | Oct 2026 |

Visualize real-time geomagnetic field data from global observatories. Monitor total intensity and vector components of Earth's magnetic field. The app efficiently caches data for offline use and is free and open-source.






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Monitor geomagnetic storms and Earth's magnetic field. Understand how these events can impact health, communications, and navigation. Plan your activities and protect yourself from potential negative effects.