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.

217+ iOS apps curated and reviewed
Geomagnetic Observatory is the household name in geomagnetic observatory, but it's far from the only option. We track 217+ 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 | Aug 2026 | |
| 2 | Free | 4.8★ (127K) | No | Yes | Aug 2026 | |
| 3 | Free | 4.0★ (47K) | No | No | Aug 2026 | |
| 4 | Free | 4.6★ (9.2K) | No | Yes | Aug 2026 | |
| 5 | Free | 4.7★ (12K) | Yes | No | Aug 2026 | |
| 6 | Free | 4.8★ (64K) | No | No | Aug 2026 | |
| 7 | Free | 4.5★ (899) | No | No | Aug 2026 | |
| 8 | Free | 4.7★ (69K) | Yes | No | Aug 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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