# PrepAiro GRE vs concepts.

The clearest difference is in-app purchases: PrepAiro GRE at none against concepts.'s 2. PrepAiro GRE also leads on iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. concepts. sells 2 in-app purchases, starting at $0.99 per 7 days. PrepAiro GRE asks for nothing beyond the download.

## The numbers

| Metric | PrepAiro GRE | concepts. |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Size | 145 MB | 55 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [PrepAIro](https://appshunter.io/developer/1795391659) | [Tsimafei Launik](https://appshunter.io/developer/1801805860) |

## What reviewers say

### PrepAiro GRE

[App page](https://appshunter.io/ios/app/prepairo-gre/id6757590892)

**In-app purchases:** none


### concepts.

[App page](https://appshunter.io/ios/app/concepts/id6758052273)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access Weekly | $0.99 | per 7 days |
| Full Access Yearly | $29.99 | per year |


## Frequently asked questions

### Is PrepAiro GRE free?

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

### Is concepts. free?

concepts. is free to download, with in-app purchases available.

### Do PrepAiro GRE or concepts. have ads?

Neither PrepAiro GRE nor concepts. shows ads.

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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.*