# Electrical Engineering Review vs Undergrounds REE Review

The clearest difference is in-app purchases: Electrical Engineering Review at none against Undergrounds REE Review's 5. Undergrounds REE Review's advantage is update cadence (every 3 weeks vs every 18 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Undergrounds REE Review sells 5 one-off in-app purchases. Electrical Engineering Review asks for nothing beyond the download.

Electrical Engineering Review ships an update every 18 months, Undergrounds REE Review every 3 weeks. The most recent releases landed on September 5, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Electrical Engineering Review | Undergrounds REE Review |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 3 weeks** |
| Size | 446 MB | 95 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Rex Banggawan](https://appshunter.io/developer/1516403954) | [Clibourn Quiapo](https://appshunter.io/developer/1812381912) |

## What reviewers say

### Electrical Engineering Review

[App page](https://appshunter.io/ios/app/electrical-engineering-review/id6502630073)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### 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 Engineering Review free?

Electrical Engineering Review is free to download, with no in-app purchases.

### Is Undergrounds REE Review free?

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

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

Neither Electrical Engineering Review nor Undergrounds REE Review shows ads.

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

Electrical Engineering Review ships an update every 18 months, and Undergrounds REE Review every 3 weeks. Most recently, Electrical Engineering Review was updated on September 5, 2026 and Undergrounds REE Review on September 12, 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.*