# Grade 12 vs UMS Rean

The clearest difference is ads: UMS Rean at none against Grade 12's shown. UMS Rean also leads on update cadence (every 3 months vs every 9 months). Grade 12's advantage is iOS requirement (13.0 vs 15.1). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Grade 12 ships an update every 9 months, UMS Rean every 3 months. The most recent releases landed on June 10, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Grade 12 | UMS Rean |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (5 ratings)](https://appshunter.io/ios/app/grade-12/id1180095032/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | **Every 3 months** |
| Monetization | Ad-supported | — |
| Size | 128 MB | 40 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Cheab Kunthea](https://appshunter.io/developer/1073035288) | [Ministry of Post and Telecommunications (MPTC)](https://appshunter.io/developer/1688540981) |

## What reviewers say

### Grade 12

[App page](https://appshunter.io/ios/app/grade-12/id1180095032)

This app provides comprehensive learning resources for Grade 12 students in Cambodia. It includes lessons, Q&A sections, formulas, and exercises across various subjects like Math, Physics, Chemistry, and Biology. The goal is to make studying more efficient and effective.

**Highlights:** Subject lessons, Question and answer sections, Subject formulas, Practice exercises, Grade 12 curriculum support

**Features:** macOS Compatibility

**In-app purchases:** none


### UMS Rean

[App page](https://appshunter.io/ios/app/ums-rean/id6742525939)

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

**In-app purchases:** none


## Frequently asked questions

### Is Grade 12 free?

Grade 12 is free to download, with no in-app purchases.

### Is UMS Rean free?

UMS Rean is free to download, with no in-app purchases.

### Do Grade 12 or UMS Rean have ads?

Grade 12 shows ads; UMS Rean does not.

### Which is updated more often, Grade 12 or UMS Rean?

Grade 12 ships an update every 9 months, and UMS Rean every 3 months. Most recently, Grade 12 was updated on June 10, 2026 and UMS Rean on September 9, 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.*