# n vs NBack³

The clearest difference is in-app purchases: n at none against NBack³'s 1. n also leads on iOS requirement (13.0 vs 17.0). NBack³'s advantage is review sentiment (71% vs 39%) and 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. NBack³ sells 1 in-app purchase, starting at $0.49 per month. n asks for nothing beyond the download.

n ships an update every 12 months, NBack³ every 4 days. The most recent releases landed on September 13, 2026 and August 14, 2026 respectively.

## The numbers

| Metric | n | NBack³ |
| --- | --- | --- |
| 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 | **71.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 12 months | **Every 4 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 5 MB | 20 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [dicwizard.jp](https://appshunter.io/developer/288699111) | [Taiki Nishimura](https://appshunter.io/developer/1780302048) |

## 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


### NBack³

[App page](https://appshunter.io/ios/app/nback-memory-training-game/id6745750227)

This brain training app uses the scientifically proven Dual N-Back method to enhance cognitive functions like working memory, focus, and decision-making. It offers adjustable difficulty levels and tracks progress with a visually engaging interface.

**Highlights:** Dual N-Back method, Adjustable difficulty (n=1-5), Enhances working memory, Improves inhibitory control, Develops attention skills, Progress tracking, Streak bonus system

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムプラン | $0.49 | per month |


## Frequently asked questions

### Is n free?

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

### Is NBack³ free?

NBack³ is free to download, with in-app purchases available.

### Do n or NBack³ have ads?

Both n and NBack³ show ads.

### Which is updated more often, n or NBack³?

n ships an update every 12 months, and NBack³ every 4 days. Most recently, n was updated on September 13, 2026 and NBack³ on August 14, 2026.

---

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