# Electrical Components Quiz vs Undergrounds REE Review

The clearest difference is update cadence: Undergrounds REE Review at every 3 weeks against Electrical Components Quiz's every 12 months. Undergrounds REE Review also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Electrical Components Quiz sells 4 in-app purchases, starting at $7.99 per 7 days and Undergrounds REE Review sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Electrical Components Quiz ships an update every 12 months, Undergrounds REE Review every 3 weeks. The most recent releases landed on October 20, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Electrical Components Quiz | Undergrounds REE Review |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/electrical-components-quiz/id6476490461/reviews)** | — |
| Number of ratings | **7** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 25 MB | 96 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Forwa Elade Wunde](https://appshunter.io/developer/1685241344) | [Clibourn Quiapo](https://appshunter.io/developer/1812381912) |

## What reviewers say

### Electrical Components Quiz

[App page](https://appshunter.io/ios/app/electrical-components-quiz/id6476490461)

Test your knowledge of electrical components with an AI-powered quiz. Progress through levels by correctly identifying over 2000 components. Earn points for correct answers and lose them for incorrect ones.

**Highlights:** AI-powered component identification, Over 2000 electrical components, Level-based progression system, Scoring system for correct/incorrect answers, Retake levels for improvement

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Week | $7.99 | per 7 days |
| Month | $19.99 | per month |
| Year | $29.99 | per year |
| Unlock full access | $5.99 | one-time |


### 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 |


## Frequently asked questions

### Is Electrical Components Quiz free?

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

### Is Undergrounds REE Review free?

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

### Do Electrical Components Quiz or Undergrounds REE Review have ads?

Neither Electrical Components Quiz nor Undergrounds REE Review shows ads.

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

Electrical Components Quiz ships an update every 12 months, and Undergrounds REE Review every 3 weeks. Most recently, Electrical Components Quiz was updated on October 20, 2026 and Undergrounds REE Review on October 25, 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.*