# Dual N vs N

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

Both are free to download. Dual N sells 2 in-app purchases, starting at $3.99 per month. N asks for nothing beyond the download.

## The numbers

| Metric | Dual N | N |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | — | Fortnightly |
| Size | 27 MB | 1 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Konstanty Koszewski](https://appshunter.io/developer/1871696981) | [Zeul Mordasiewicz](https://appshunter.io/developer/1878875793) |

## What reviewers say

### Dual N

[App page](https://appshunter.io/ios/app/dual-n-back-memory-trainer/id6759211886)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dual N-back Monthly Premium | $3.99 | per month |
| Dual N-back Yearly Premium | $29.99 | per year |


### N

[App page](https://appshunter.io/ios/app/n-back-math/id6769662439)

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

**In-app purchases:** none


## Frequently asked questions

### Is Dual N free?

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

### Is N free?

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

### Do Dual N or N have ads?

Dual N shows ads; N does not.

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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.*