# N'Back vs Dual N

The clearest difference is ads: Dual N at none against N'Back's shown. Dual N also leads on update cadence (every 10 days vs every 9 months) and rating (4.3 vs 4.0). N'Back's advantage is review sentiment (73% vs 48%). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. N'Back sells 1 one-off in-app purchase and Dual N sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Dual N holds the better App Store score, 4.3 against 4.0. That said, the two scores are not equally well evidenced: Dual N has 19 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 73% of N'Back's written reviews are positive against 48% of Dual N's, so the app with the better star average is not the one people write more warmly about.

N'Back ships an update every 9 months, Dual N every 10 days. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | N'Back | Dual N |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (3 ratings)](https://appshunter.io/ios/app/nback/id591320567/reviews) | **[4.3 (19 ratings)](https://appshunter.io/ios/app/dual-n-back-adhd-focus-game/id1568448504/reviews)** |
| Number of ratings | 3 | **19** |
| Positive reviews | **72.7% of reviews** | 48.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | **Every 10 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 6 MB | 41 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) | [Hiromi Fujita](https://appshunter.io/developer/1364801021) |

## 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 |


### Dual N

[App page](https://appshunter.io/ios/app/dual-n-back-adhd-focus-game/id1568448504)

This scientifically proven brain training app enhances working memory, concentration, and cognitive abilities. It helps improve IQ, memory, and thinking speed through engaging gameplay that challenges your brain. Consistent practice leads to noticeable improvements in focus and mental agility.

**Highlights:** Strengthens working memory, Improves concentration, Enhances cognitive abilities, Difficulty adjustment (N-2 to N-5), Progress visualization with graphs, Statistics and calendar tracking, Global player rankings

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium Features | $1.99 | per month |
| Annual Premium Features | $19.99 | per year |


## Frequently asked questions

### Is N'Back free?

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

### Is Dual N free?

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

### Which has better reviews, N'Back or Dual N?

Dual N is rated higher. N'Back averages 4.0 out of 5 from 3 ratings, while Dual N averages 4.3 from 19 ratings.

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

N'Back shows ads; Dual N does not.

### Which is updated more often, N'Back or Dual N?

N'Back ships an update every 9 months, and Dual N every 10 days. Most recently, N'Back was updated on October 27, 2026 and Dual N on October 24, 2026.

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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.*