# Magnetic Field Calc + vs Seismometer+

The clearest difference is price: Seismometer+ at Free against Magnetic Field Calc +'s $2.99. Seismometer+ also leads on rating (4.5 vs 4.0) and ratings volume (82 vs 1). Magnetic Field Calc +'s advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

Seismometer+ is free to download; Magnetic Field Calc + costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Seismometer+ holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Seismometer+ has 82 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Magnetic Field Calc + | Seismometer+ |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/magnetic-field-calc-plus/id1423005752/reviews) | **[4.5 (82 ratings)](https://appshunter.io/ios/app/seismometer-plus/id6739265160/reviews)** |
| Number of ratings | 1 | **82** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 27 months | — |
| Monetization | Paid | **Ad-supported** |
| Size | 1 MB | 3 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [UniCom Technology](https://appshunter.io/developer/1270764210) |

## What reviewers say

### Magnetic Field Calc +

[App page](https://appshunter.io/ios/app/magnetic-field-calc-plus/id1423005752)

Calculate magnetic fields from electric currents with four distinct modes. Solve for any variable, visualize with interactive diagrams, and utilize flexible unit support. Works offline for convenience.

**Highlights:** Four calculation modes (Straight Wire, Loop, Solenoid, Toroid), Solve for any variable (field, current, distance, etc.), Interactive 2D diagrams, Flexible unit support (A, mA, m, cm, mm, T, µT, Gauss), Built-in reference sheet, Save and copy calculations, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### Seismometer+

[App page](https://appshunter.io/ios/app/seismometer-plus/id6739265160)

Transform your device into a powerful seismometer to measure and visualize vibrations in real time. Track tremors, analyze surface stability, and explore the unseen movements around you with intuitive graphical displays. Perfect for science enthusiasts and the curious.

**Highlights:** Real-time X, Y, Z axis acceleration graphs, Cumulative vibration intensity analysis, Adjustable long-term data recording intervals, Dark mode display, Customizable graph update rates and sensitivity

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

**In-app purchases:** none


## Frequently asked questions

### Is Magnetic Field Calc + free?

Magnetic Field Calc + costs $2.99, with no in-app purchases.

### Is Seismometer+ free?

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

### Which has better reviews, Magnetic Field Calc + or Seismometer+?

Seismometer+ is rated higher. Magnetic Field Calc + averages 4.0 out of 5 from 1 ratings, while Seismometer+ averages 4.5 from 82 ratings.

### Do Magnetic Field Calc + or Seismometer+ have ads?

Seismometer+ shows ads; Magnetic Field Calc + does not.

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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.*