# Backshift vs N

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

Both are free to download. Backshift sells 2 in-app purchases, starting at $0.49 per month. N asks for nothing beyond the download.

## The numbers

| Metric | Backshift | N |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | — | Every 4 days |
| Monetization | Freemium | — |
| Size | 22 MB | 30 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Iris Radoi](https://appshunter.io/developer/1867296245) | [Bartosz Bleja](https://appshunter.io/developer/1884967212) |

## What reviewers say

### Backshift

[App page](https://appshunter.io/ios/app/backshift-dual-n-back/id6757496082)

This app trains your working memory with a dual N-back exercise. It challenges you to recall positions and sounds from previous steps, adapting difficulty as you improve. Daily practice and streak tracking help build consistency for enhanced cognitive function.

**Highlights:** Adaptive difficulty adjustment, Progress tracking and accuracy trends, Daily streak tracking, Customizable session duration and speed, Daily training reminders, Multiple audio packs (letters/numbers)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advanced Levels (Monthly) | $0.49 | per month |
| Advanced Levels (Yearly) | $4.99 | per year |


### N

[App page](https://appshunter.io/ios/app/n-back/id6765962582)

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

**In-app purchases:** none


## Frequently asked questions

### Is Backshift free?

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

### Is N free?

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

### Do Backshift or N have ads?

N shows ads; Backshift 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.*