# ワーキングメモリトレーニング vs Shireka

The clearest difference is ads: Shireka at none against ワーキングメモリトレーニング's shown. Shireka also leads on update cadence (fortnightly vs every 6 weeks). ワーキングメモリトレーニング's advantage is iOS requirement (18.6 vs 26.0). On price, 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 Shireka sells 3 one-off in-app purchases. 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, Shireka fortnightly. 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 | Shireka |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Size | 55 MB | 19 MB |
| Requires iOS | **18.6** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Takahiro Kogawa](https://appshunter.io/developer/1886613808) | [Yugo Sugiyama](https://appshunter.io/developer/1500223823) |

## 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 |


### Shireka

[App page](https://appshunter.io/ios/app/shireka/id6791211903)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support Pack: Bronze | $0.49 | one-time |
| Support Pack: Silver | $5.99 | one-time |
| Support Pack: Gold | $59.99 | 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 Shireka free?

Shireka 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 Shireka have ads?

ワーキングメモリトレーニング shows ads; Shireka does not.

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

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