# SignalLearning vs Electromagnetic Theory Quiz

The clearest difference is price: Electromagnetic Theory Quiz at Free against SignalLearning's $0.99. Electromagnetic Theory Quiz also leads on rating (5.0 vs 2.0) and update cadence (every 2 weeks vs every 19 months). SignalLearning's advantage is in-app purchases (none vs 7) and ads (none vs shown). On ratings volume and device support there is nothing between them.

Electromagnetic Theory Quiz is free to download; SignalLearning costs $0.99 up front. Electromagnetic Theory Quiz sells 7 in-app purchases, starting at $4.99 per month. SignalLearning asks for nothing beyond the download.

Electromagnetic Theory Quiz holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

SignalLearning ships an update every 19 months, Electromagnetic Theory Quiz every 2 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | SignalLearning | Electromagnetic Theory Quiz |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/signallearning/id1446742949/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/electromagnetic-theory-quiz/id1584634207/reviews)** |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 19 months | **Every 2 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 5 MB | 68 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [domesticusdevelop](https://appshunter.io/developer/373834594) | [Arshad Iqbal](https://appshunter.io/developer/1547001151) |

## What reviewers say

### SignalLearning

[App page](https://appshunter.io/ios/app/signallearning/id1446742949)

Learn the modern semaphore alphabet with this app. It presents 26 letters and 10 numbers, designed to make memorization easy and provide a testing mechanism for your knowledge.

**Highlights:** Modern semaphore alphabet, 26 letters and 10 numbers, Learning aid, Memorization testing, Visual signal presentation

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

**In-app purchases:** none


### Electromagnetic Theory Quiz

[App page](https://appshunter.io/ios/app/electromagnetic-theory-quiz/id1584634207)

Practice over 500 multiple-choice questions on electromagnetic theory. This app offers self-assessment tests and revision notes for engineering students, covering basic to advanced topics. It's designed for quick study and exam preparation.

**Highlights:** 500+ electromagnetic theory MCQs, Self-assessment tests, Revision notes, Covers basic and advanced topics, Quick study guide, Exam preparation

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Package | $4.99 | per month |
| 3 Months Package | $9.99 | per 3 months |
| 6 Months Package | $14.99 | per 6 months |
| 1 Year Package | $19.99 | per year |
| 1500 Coins | $0.99 | one-time |
| 3500 Coins | $1.99 | one-time |
| 6000 Coins | $2.99 | one-time |


## Frequently asked questions

### Is SignalLearning free?

SignalLearning costs $0.99, with no in-app purchases.

### Is Electromagnetic Theory Quiz free?

Electromagnetic Theory Quiz is free to download, with in-app purchases available.

### Which has better reviews, SignalLearning or Electromagnetic Theory Quiz?

Electromagnetic Theory Quiz is rated higher. SignalLearning averages 2.0 out of 5 from 1 ratings, while Electromagnetic Theory Quiz averages 5.0 from 1 ratings.

### Do SignalLearning or Electromagnetic Theory Quiz have ads?

Electromagnetic Theory Quiz shows ads; SignalLearning does not.

### Which is updated more often, SignalLearning or Electromagnetic Theory Quiz?

SignalLearning ships an update every 19 months, and Electromagnetic Theory Quiz every 2 weeks. Most recently, SignalLearning was updated on November 2, 2026 and Electromagnetic Theory Quiz on November 3, 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.*