# Undergrounds REE Review vs Conquer The Board Exam

The clearest difference is price: Undergrounds REE Review at Free against Conquer The Board Exam's $2.99. Conquer The Board Exam's advantage is update cadence (every 3 days vs every 3 weeks). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Undergrounds REE Review is free to download; Conquer The Board Exam costs $2.99 up front. Undergrounds REE Review sells 5 one-off in-app purchases and Conquer The Board Exam sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Undergrounds REE Review ships an update every 3 weeks, Conquer The Board Exam every 3 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Undergrounds REE Review | Conquer The Board Exam |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Size | 96 MB | 74 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Clibourn Quiapo](https://appshunter.io/developer/1812381912) | [Gary Chris Lacdang](https://appshunter.io/developer/1839488041) |

## 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 |


### Conquer The Board Exam

[App page](https://appshunter.io/ios/app/conquer-the-board-exam/id6770008619)

**Features:** Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Mayari AI Credits | $1.99 | one-time |
| Unlock an Exam | $2.99 | one-time |
| 350 Mayari AI Credits | $4.99 | one-time |
| 650 Mayari AI Credits | $7.99 | one-time |
| 1,500 Mayari AI Credits | $14.99 | one-time |


## Frequently asked questions

### Is Undergrounds REE Review free?

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

### Is Conquer The Board Exam free?

Conquer The Board Exam costs $2.99, and also offers in-app purchases.

### Do Undergrounds REE Review or Conquer The Board Exam have ads?

Neither Undergrounds REE Review nor Conquer The Board Exam shows ads.

### Which is updated more often, Undergrounds REE Review or Conquer The Board Exam?

Undergrounds REE Review ships an update every 3 weeks, and Conquer The Board Exam every 3 days. Most recently, Undergrounds REE Review was updated on October 30, 2026 and Conquer The Board Exam on October 31, 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.*