# NBack³ vs ワーキングメモリトレーニング

The clearest difference is update cadence: NBack³ at every 4 days against ワーキングメモリトレーニング's every 6 weeks. On price, ads, in-app purchases 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 and ワーキングメモリトレーニング sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

NBack³ ships an update every 4 days, ワーキングメモリトレーニング every 6 weeks. Both last shipped on October 7, 2026.

## The numbers

| Metric | NBack³ | ワーキングメモリトレーニング |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 4 days** | Every 6 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 55 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Taiki Nishimura](https://appshunter.io/developer/1780302048) | [Takahiro Kogawa](https://appshunter.io/developer/1886613808) |

## What reviewers say

### 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 |


### ワーキングメモリトレーニング

[App page](https://appshunter.io/ios/app/n-back/id6761617765)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| プレミアム機能 | $1.99 | one-time |


## Frequently asked questions

### Is NBack³ free?

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

### Is ワーキングメモリトレーニング free?

ワーキングメモリトレーニング is free to download, with in-app purchases available.

### Do NBack³ or ワーキングメモリトレーニング have ads?

Both NBack³ and ワーキングメモリトレーニング show ads.

### Which is updated more often, NBack³ or ワーキングメモリトレーニング?

NBack³ ships an update every 4 days, and ワーキングメモリトレーニング every 6 weeks. Most recently, NBack³ was updated on October 7, 2026 and ワーキングメモリトレーニング on October 7, 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.*