# Undergrounds REE Review vs Electrical Engineering

The clearest difference is iOS requirement: Undergrounds REE Review at 15.0 against Electrical Engineering's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Undergrounds REE Review sells 5 one-off in-app purchases and Electrical Engineering sells 6 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Undergrounds REE Review ships an update every 3 weeks, Electrical Engineering every 2 weeks. The most recent releases landed on September 12, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Undergrounds REE Review | Electrical Engineering |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (6 ratings)](https://appshunter.io/ios/app/electrical-engineering-quiz/id6753985776/reviews)** |
| Number of ratings | — | **6** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 95 MB | 21 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Clibourn Quiapo](https://appshunter.io/developer/1812381912) | [Forwa Elade Wunde](https://appshunter.io/developer/1685241344) |

## What reviewers say

### Undergrounds REE Review

[App page](https://appshunter.io/ios/app/undergrounds-ree-review/id6745921735)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Math | $0.99 | one-time |
| ESAS | $0.99 | one-time |
| EE | $0.99 | one-time |
| Full Enrollment | $0.99 | one-time |
| Refresher | $0.99 | one-time |


### Electrical Engineering

[App page](https://appshunter.io/ios/app/electrical-engineering-quiz/id6753985776)

Master electrical engineering concepts with engaging quizzes covering a wide range of topics. Ideal for students and professionals to enhance knowledge and skills in the field.

**Highlights:** Comprehensive quiz topics, Fundamentals of electrical engineering, Circuit analysis and network theorems, AC theory and electrical machines, Power systems and electronics, Control systems and signals

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Week | $7.99 | per 7 days |
| 1 Month | $19.99 | per month |
| 1 Year | $29.99 | per year |
| 1500 | $1.99 | one-time |
| 3500 | $2.99 | one-time |
| 9000 | $4.99 | one-time |


## Frequently asked questions

### Is Undergrounds REE Review free?

Undergrounds REE Review is free to download, with in-app purchases available.

### Is Electrical Engineering free?

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

### Do Undergrounds REE Review or Electrical Engineering have ads?

Neither Undergrounds REE Review nor Electrical Engineering shows ads.

### Which is updated more often, Undergrounds REE Review or Electrical Engineering?

Undergrounds REE Review ships an update every 3 weeks, and Electrical Engineering every 2 weeks. Most recently, Undergrounds REE Review was updated on September 12, 2026 and Electrical Engineering on September 11, 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.*