# ワーキングメモリトレーニング vs Dual N

The clearest difference is update cadence: Dual N at every 5 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. ワーキングメモリトレーニング sells 2 one-off in-app purchases and Dual N sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ワーキングメモリトレーニング ships an update every 6 weeks, Dual N every 5 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ワーキングメモリトレーニング | Dual N |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Every 5 days** |
| Size | 55 MB | 13 MB |
| Requires iOS | 18.6 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Takahiro Kogawa](https://appshunter.io/developer/1886613808) | [Takanori Horitsu](https://appshunter.io/developer/1896386009) |

## What reviewers say

### 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 |


### Dual N

[App page](https://appshunter.io/ios/app/dual-n-back-brain-trainer/id6767109556)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-Free | $0.99 | one-time |


## Frequently asked questions

### 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.

### Is Dual N free?

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

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

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

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

ワーキングメモリトレーニング ships an update every 6 weeks, and Dual N every 5 days. Most recently, ワーキングメモリトレーニング was updated on October 24, 2026 and Dual N on October 25, 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.*