# [大人の脳トレ] 決断力をあげろ！小学生から大人まで無料で暇つぶしが出来るゲーム vs N'Back 10 Dual

The clearest difference is price: [大人の脳トレ] 決断力をあげろ！小学生から大人まで無料で暇つぶしが出来るゲーム at Free against N'Back 10 Dual's $2.99. [大人の脳トレ] 決断力をあげろ！小学生から大人まで無料で暇つぶしが出来るゲーム also leads on iOS requirement (6.0 vs 15.6). N'Back 10 Dual's advantage is update cadence (every 10 months vs every 26 months). On ads, in-app purchases and device support there is nothing between them.

[大人の脳トレ] 決断力をあげろ！小学生から大人まで無料で暇つぶしが出来るゲーム is free to download; N'Back 10 Dual costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

[大人の脳トレ] 決断力をあげろ！小学生から大人まで無料で暇つぶしが出来るゲーム ships an update every 26 months, N'Back 10 Dual every 10 months. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | [大人の脳トレ] 決断力をあげろ！小学生から大人まで無料で暇つぶしが出来るゲーム | N'Back 10 Dual |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/id894298232/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 10 months** |
| Monetization | **Free** | Paid |
| Size | 9 MB | 1 MB |
| Requires iOS | **6.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [REP COM Inc.](https://appshunter.io/developer/702707146) | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) |

## What reviewers say

### [大人の脳トレ] 決断力をあげろ！小学生から大人まで無料で暇つぶしが出来るゲーム

[App page](https://appshunter.io/ios/app/id894298232)

This game challenges players to quickly identify if the current symbol matches the previous one by tapping 'O' or 'X'. It's designed to improve concentration and pass the time for users of all ages.

**Highlights:** Symbol matching gameplay, Improves concentration, Suitable for all ages, Free to play, Time-killing activity

**Features:** macOS Compatibility

**In-app purchases:** none


### N'Back 10 Dual

[App page](https://appshunter.io/ios/app/nback-10-dual/id1566085207)

This application offers a dual-task version of the n-back memory game, challenging users to track and recall sequences across multiple simultaneous tasks. It features adjustable flash times and two distinct modes for varied cognitive training.

**Highlights:** Dual-task n-back functionality, 1'Back to 10'Back levels, Flash Mode and Step Mode, Adjustable flash time, Multiple simultaneous memory tasks

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

**In-app purchases:** none


## Frequently asked questions

### Is [大人の脳トレ] 決断力をあげろ！小学生から大人まで無料で暇つぶしが出来るゲーム free?

[大人の脳トレ] 決断力をあげろ！小学生から大人まで無料で暇つぶしが出来るゲーム is free to download, with no in-app purchases.

### Is N'Back 10 Dual free?

N'Back 10 Dual costs $2.99, with no in-app purchases.

### Do [大人の脳トレ] 決断力をあげろ！小学生から大人まで無料で暇つぶしが出来るゲーム or N'Back 10 Dual have ads?

Neither [大人の脳トレ] 決断力をあげろ！小学生から大人まで無料で暇つぶしが出来るゲーム nor N'Back 10 Dual shows ads.

### Which is updated more often, [大人の脳トレ] 決断力をあげろ！小学生から大人まで無料で暇つぶしが出来るゲーム or N'Back 10 Dual?

[大人の脳トレ] 決断力をあげろ！小学生から大人まで無料で暇つぶしが出来るゲーム ships an update every 26 months, and N'Back 10 Dual every 10 months. Most recently, [大人の脳トレ] 決断力をあげろ！小学生から大人まで無料で暇つぶしが出来るゲーム was updated on October 10, 2026 and N'Back 10 Dual on October 24, 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.*