# 考える力を考えよう vs N'Back

The clearest difference is ads: 考える力を考えよう at none against N'Back's shown. 考える力を考えよう also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.0). N'Back's advantage is update cadence (every 9 months vs every 20 months). On price and in-app purchases there is nothing between them.

Both are free to download. 考える力を考えよう sells 1 one-off in-app purchase and N'Back sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

考える力を考えよう ships an update every 20 months, N'Back every 9 months. The most recent releases landed on June 5, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | 考える力を考えよう | N'Back |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (3 ratings)](https://appshunter.io/ios/app/nback/id591320567/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 70.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 20 months | **Every 9 months** |
| Monetization | — | Free with in-app purchases |
| Size | 14 MB | 6 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Wada System, K.K](https://appshunter.io/developer/576215741) | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) |

## What reviewers say

### 考える力を考えよう

[App page](https://appshunter.io/ios/app/id590411571)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 第二章から第六章 | $5.99 | one-time |


### N'Back

[App page](https://appshunter.io/ios/app/nback/id591320567)

Enhance sensory and working memory with this brain training application. It offers various modes to test your ability to recall sequences of numbers, progressing through different 'N' levels.

**Highlights:** Sensory memory improvement, Working memory enhancement, N'Back exercises, Flash Mode, Slow Mode, Step Mode

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Add Levels (3'Back-10'Back) and Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is 考える力を考えよう free?

考える力を考えよう is free to download, with in-app purchases available.

### Is N'Back free?

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

### Do 考える力を考えよう or N'Back have ads?

N'Back shows ads; 考える力を考えよう does not.

### Which is updated more often, 考える力を考えよう or N'Back?

考える力を考えよう ships an update every 20 months, and N'Back every 9 months. Most recently, 考える力を考えよう was updated on June 5, 2026 and N'Back on September 11, 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.*