# 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ vs 頭を柔らかくする脳トレ

The clearest difference is update cadence: 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ at every 10 days against 頭を柔らかくする脳トレ's every 2 months. 頭を柔らかくする脳トレ's advantage is review sentiment (58% vs 41%) and ratings volume (14 vs 2). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.5 for 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ against 4.6 for 頭を柔らかくする脳トレ. That said, the two scores are not equally well evidenced: 頭を柔らかくする脳トレ has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 41% of 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~'s written reviews are positive against 58% of 頭を柔らかくする脳トレ's.

大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ ships an update every 10 days, 頭を柔らかくする脳トレ every 2 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ | 頭を柔らかくする脳トレ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/2iq/id1115273015/reviews) | **[4.6 (14 ratings)](https://appshunter.io/ios/app/id1135722259/reviews)** |
| Number of ratings | 2 | **14** |
| Positive reviews | 41.4% of reviews | **58.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 10 days** | Every 2 months |
| Monetization | Ad-supported | — |
| Size | 12 MB | 95 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ikue Konno](https://appshunter.io/developer/971968281) | [Jammsworks Inc.](https://appshunter.io/developer/1080532994) |

## What reviewers say

### 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~

[App page](https://appshunter.io/ios/app/2iq/id1115273015)

A brain training app designed for adults to sharpen their minds with a variety of riddles. It offers 100 questions ranging from easy to challenging, perfect for passing the time and stimulating your intellect.

**Highlights:** Brain training for adults, 100 riddle questions, Varied difficulty levels, IQ and cipher quizzes, Time-killing entertainment

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

**In-app purchases:** none


### 頭を柔らかくする脳トレ

[App page](https://appshunter.io/ios/app/id1135722259)

**In-app purchases:** none


## Frequently asked questions

### Is 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ free?

大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ is free to download, with no in-app purchases.

### Is 頭を柔らかくする脳トレ free?

頭を柔らかくする脳トレ is free to download, with no in-app purchases.

### Which has better reviews, 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ or 頭を柔らかくする脳トレ?

頭を柔らかくする脳トレ is rated higher. 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ averages 4.5 out of 5 from 2 ratings, while 頭を柔らかくする脳トレ averages 4.6 from 14 ratings.

### Do 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ or 頭を柔らかくする脳トレ have ads?

Both 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ and 頭を柔らかくする脳トレ show ads.

### Which is updated more often, 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ or 頭を柔らかくする脳トレ?

大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ ships an update every 10 days, and 頭を柔らかくする脳トレ every 2 months. Most recently, 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ was updated on November 2, 2026 and 頭を柔らかくする脳トレ on November 2, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*