# Magnetometer ∞ vs SepCalc

The clearest difference is ads: SepCalc at none against Magnetometer ∞'s shown. SepCalc also leads on device support (3 vs 1). On price, update cadence, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Magnetometer ∞ sells 2 in-app purchases, starting at $1.99 per 7 days and SepCalc sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Magnetometer ∞ ships an update every 2 weeks, SepCalc fortnightly. The most recent releases landed on November 6, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Magnetometer ∞ | SepCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (59 ratings)](https://appshunter.io/ios/app/magnetometer/id6753061844/reviews)** | — |
| Number of ratings | **59** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 16 MB | 103 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Fawkes Wei](https://appshunter.io/developer/432767536) | [David Seppi](https://appshunter.io/developer/1845444357) |

## What reviewers say

### Magnetometer ∞

[App page](https://appshunter.io/ios/app/magnetometer/id6753061844)

Visualize magnetic fields in real-time with precision charts and monitor X, Y, Z axis readings. Ideal for scientific research, education, and field work, this app offers professional-grade accuracy and an intuitive interface for easy data interpretation.

**Highlights:** Real-time magnetic field visualization, X, Y, Z axis readings in microteslas, Scientific research tool, Educational aid, Field work companion, Intuitive interface

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Lifetime | $9.99 | one-time |


### SepCalc

[App page](https://appshunter.io/ios/app/sepcalc/id6804912244)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SepCalc Intelligence Monthly | $4.99 | per month |
| SepCalc Intelligence Annual | $39.99 | per year |
| SepCalc Pro Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is Magnetometer ∞ free?

Magnetometer ∞ is free to download, with in-app purchases available.

### Is SepCalc free?

SepCalc is free to download, with in-app purchases available.

### Do Magnetometer ∞ or SepCalc have ads?

Magnetometer ∞ shows ads; SepCalc does not.

### Which is updated more often, Magnetometer ∞ or SepCalc?

Magnetometer ∞ ships an update every 2 weeks, and SepCalc fortnightly. Most recently, Magnetometer ∞ was updated on November 6, 2026 and SepCalc on October 29, 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.*