# N'Back vs DivisorDescent

The clearest difference is in-app purchases: DivisorDescent at none against N'Back's 1. DivisorDescent also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. N'Back sells 1 one-off in-app purchase. DivisorDescent asks for nothing beyond the download.

## The numbers

| Metric | N'Back | DivisorDescent |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (3 ratings)](https://appshunter.io/ios/app/nback/id591320567/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 70.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 6 MB | 1 MB |
| Requires iOS | **16.0** | 16.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) | [Katsuhiko Yao](https://appshunter.io/developer/1543188534) |

## What reviewers say

### N'Back

[App page](https://appshunter.io/ios/app/nback/id591320567)

Enhance sensory and working memory with this brain training application. It offers various modes to test your ability to recall sequences of numbers, progressing through different 'N' levels.

**Highlights:** Sensory memory improvement, Working memory enhancement, N'Back exercises, Flash Mode, Slow Mode, Step Mode

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Add Levels (3'Back-10'Back) and Remove Ads | $2.99 | one-time |


### DivisorDescent

[App page](https://appshunter.io/ios/app/divisordescent/id6751701929)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is N'Back free?

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

### Is DivisorDescent free?

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

### Do N'Back or DivisorDescent have ads?

N'Back shows ads; DivisorDescent 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.*