# n vs Dual N

The clearest difference is rating: Dual N at 4.4 against n's 3.0. Dual N also leads on ads (none vs shown) and update cadence (every 6 days vs every 12 months). n's advantage is in-app purchases (none vs 7) and device support (3 vs 1). On price there is nothing between them.

Both are free to download. Dual N sells 5 in-app purchases, starting at $1.99 per month. n asks for nothing beyond the download.

Dual N holds the better App Store score, 4.4 against 3.0. Both are backed by a comparable volume of ratings — 44 and 12 respectively. Written reviews point the same way: 39% of n's written reviews are positive against 67% of Dual N's.

n ships an update every 12 months, Dual N every 6 days. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | n | Dual N |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (44 ratings)](https://appshunter.io/ios/app/n-back/id551544969/reviews) | **[4.4 (12 ratings)](https://appshunter.io/ios/app/dual-n-back-extreme/id6744034751/reviews)** |
| Number of ratings | **44** | 12 |
| Positive reviews | 38.9% of reviews | **66.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 12 months | **Every 6 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 5 MB | 68 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [dicwizard.jp](https://appshunter.io/developer/288699111) | [Jatin Thakur](https://appshunter.io/developer/1805656547) |

## What reviewers say

### n

[App page](https://appshunter.io/ios/app/n-back/id551544969)

Enhance your working memory with this brain training application. It challenges you to recall past information by selecting difficulty levels and memorizing digits from addition problems.

**Highlights:** Working memory training, Adjustable difficulty levels (1-10), Memorization of addition problem digits, Tap last digit of previous answers, N-back exercise implementation

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

**In-app purchases:** none


### Dual N

[App page](https://appshunter.io/ios/app/dual-n-back-extreme/id6744034751)

This app offers brain-training exercises to enhance working memory, concentration, and problem-solving skills. It features multiple N-back modes, progress tracking, and customizable sessions in a user-friendly interface.

**Highlights:** Dual, Triple & Quad N-Back modes, Cognitive performance enhancement, Progress tracking and statistics, Customizable training sessions, User-friendly interface

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| N Back Extreme Monthly Subscription | $4.99 | per month |
| Six Months | $4.99 | per 6 months |
| 6 Months | $4.99 | per 6 months |
| N Back Extreme Yearly Subscription | $29.99 | per year |


## Frequently asked questions

### Is n free?

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

### Is Dual N free?

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

### Which has better reviews, n or Dual N?

Dual N is rated higher. n averages 3.0 out of 5 from 44 ratings, while Dual N averages 4.4 from 12 ratings.

### Do n or Dual N have ads?

n shows ads; Dual N does not.

### Which is updated more often, n or Dual N?

n ships an update every 12 months, and Dual N every 6 days. Most recently, n was updated on October 23, 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.*