# Electromagnetic Forces vs EMP App

The clearest difference is price: EMP App at Free against Electromagnetic Forces's $0.99. EMP App also leads on update cadence (every 3 days vs every 32 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

EMP App is free to download; Electromagnetic Forces costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Electromagnetic Forces ships an update every 32 months, EMP App every 3 days. The most recent releases landed on September 18, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Electromagnetic Forces | EMP App |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/electromagnetic-forces-emf/id1159691990/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 32 months | **Every 3 days** |
| Monetization | Paid | — |
| Size | 25 MB | 39 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [www.ajaxmediatech.com](https://appshunter.io/developer/973768003) | [Vathana Sann](https://appshunter.io/developer/1634140022) |

## What reviewers say

### Electromagnetic Forces

[App page](https://appshunter.io/ios/app/electromagnetic-forces-emf/id1159691990)

This educational app uses interactive 3D animations and experiments to explain electromagnetism and cathode rays for K12 students. It covers Fleming's left-hand rule, cathode ray structure, and the Cathode Ray Oscilloscope, with practice exercises and quizzes to reinforce learning.

**Highlights:** Interactive 3D animations, Explains Fleming's left-hand rule, Demonstrates cathode ray structure, Illustrates Cathode Ray Oscilloscope, Practice exercises, Interactive quizzes

**Features:** macOS Compatibility

**In-app purchases:** none


### EMP App

[App page](https://appshunter.io/ios/app/emp-app/id6470178101)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Electromagnetic Forces free?

Electromagnetic Forces costs $0.99, with no in-app purchases.

### Is EMP App free?

EMP App is free to download, with no in-app purchases.

### Do Electromagnetic Forces or EMP App have ads?

Neither Electromagnetic Forces nor EMP App shows ads.

### Which is updated more often, Electromagnetic Forces or EMP App?

Electromagnetic Forces ships an update every 32 months, and EMP App every 3 days. Most recently, Electromagnetic Forces was updated on September 18, 2026 and EMP App on September 10, 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.*