# Electromag vs PP+ Ohm's Law

The clearest difference is update cadence: Electromag at every 9 months against PP+ Ohm's Law's every 29 months. On price, ads, in-app purchases and device support there is nothing between them.

Electromag costs $1.99 and PP+ Ohm's Law $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Electromag ships an update every 9 months, PP+ Ohm's Law every 29 months. The most recent releases landed on September 29, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Electromag | PP+ Ohm's Law |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/electromag/id404649255/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 45.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 29 months |
| Monetization | Paid | — |
| Size | 20 MB | 100 MB |
| Requires iOS | 18.6 | **18.0** |
| Devices | **iPhone, iPad** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Xavier Daxhelet](https://appshunter.io/developer/339056993) | [Polyhedron Learning Media, Inc.](https://appshunter.io/developer/458882328) |

## What reviewers say

### Electromag

[App page](https://appshunter.io/ios/app/electromag/id404649255)

Explore fundamental concepts of electromagnetism through interactive animations and detailed explanations. This app supports high school and university courses, covering electrostatics, electric current, magnetism, and Maxwell's equations with visual aids.

**Highlights:** Basic equations memorandum, 20+ electromagnetism animations, 3D animations, Covers electrostatics, electric current, magnetism, and electromagnetism, Includes physical constants, Classroom projection support

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

**In-app purchases:** none


### PP+ Ohm's Law

[App page](https://appshunter.io/ios/app/pp-plus-ohms-law/id599169783)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Electromag free?

Electromag costs $1.99, with no in-app purchases.

### Is PP+ Ohm's Law free?

PP+ Ohm's Law costs $1.99, with no in-app purchases.

### Do Electromag or PP+ Ohm's Law have ads?

Neither Electromag nor PP+ Ohm's Law shows ads.

### Which is updated more often, Electromag or PP+ Ohm's Law?

Electromag ships an update every 9 months, and PP+ Ohm's Law every 29 months. Most recently, Electromag was updated on September 29, 2026 and PP+ Ohm's Law on October 6, 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.*