# n vs N

The clearest difference is in-app purchases: n at none against N's 1. n also leads on iOS requirement (13.0 vs 26.0). N's advantage is update cadence (every 4 days vs every 12 months). On price, ads and device support there is nothing between them.

Both are free to download. N sells 1 in-app purchase, starting at $0.99 per month. n asks for nothing beyond the download.

n ships an update every 12 months, N every 4 days. The most recent releases landed on September 13, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | n | N |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (44 ratings)](https://appshunter.io/ios/app/n-back/id551544969/reviews)** | — |
| Number of ratings | **44** | — |
| Positive reviews | 38.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 12 months | **Every 4 days** |
| Monetization | Ad-supported | — |
| Size | 5 MB | 21 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [dicwizard.jp](https://appshunter.io/developer/288699111) | [chunson yamada](https://appshunter.io/developer/1538754889) |

## 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


### N

[App page](https://appshunter.io/ios/app/n-back-training/id1627478554)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| １ヶ月プラン | $0.99 | per month |


## Frequently asked questions

### Is n free?

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

### Is N free?

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

### Do n or N have ads?

Both n and N show ads.

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

n ships an update every 12 months, and N every 4 days. Most recently, n was updated on September 13, 2026 and N on September 22, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*