# 코어 영어 훈련소 vs 그랭

The clearest difference is device support: 그랭 at 3 against 코어 영어 훈련소's —. 그랭 also leads on iOS requirement (12.0 vs 15.1). On price and in-app purchases there is nothing between them.

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

## The numbers

| Metric | 코어 영어 훈련소 | 그랭 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Weekly |
| Size | 21 MB | 45 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [CORE EDUCATION](https://appshunter.io/developer/1453618878) | [WEAVERSMIND](https://appshunter.io/developer/389518645) |

## What reviewers say

### 코어 영어 훈련소

[App page](https://appshunter.io/ios/app/id6474296007)

**In-app purchases:** none


### 그랭

[App page](https://appshunter.io/ios/app/id6590617509)

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

**In-app purchases:** none


## Frequently asked questions

### Is 코어 영어 훈련소 free?

코어 영어 훈련소 is free to download, with no in-app purchases.

### Is 그랭 free?

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

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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.*