# 頭を柔らかくする脳トレ vs 東大王からの挑戦状

The clearest difference is rating: 頭を柔らかくする脳トレ at 4.6 against 東大王からの挑戦状's 4.1. 頭を柔らかくする脳トレ also leads on review sentiment (58% vs 36%). On price, ratings volume, update cadence and ads there is nothing between them.

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

頭を柔らかくする脳トレ holds the better App Store score, 4.6 against 4.1. Both are backed by a comparable volume of ratings — 14 and 22 respectively. Written reviews point the same way: 58% of 頭を柔らかくする脳トレ's written reviews are positive against 36% of 東大王からの挑戦状's.

頭を柔らかくする脳トレ ships an update every 2 months, 東大王からの挑戦状 every 3 months. The most recent releases landed on October 26, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | 頭を柔らかくする脳トレ | 東大王からの挑戦状 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (14 ratings)](https://appshunter.io/ios/app/id1135722259/reviews)** | [4.1 (22 ratings)](https://appshunter.io/ios/app/iq/id1442481744/reviews) |
| Number of ratings | 14 | **22** |
| Positive reviews | **58.0% of reviews** | 35.7% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | — | Ad-supported |
| Size | 95 MB | 228 MB |
| Requires iOS | **12.0** | 12.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jammsworks Inc.](https://appshunter.io/developer/1080532994) | [MIKU KURAKI](https://appshunter.io/developer/1161306102) |

## What reviewers say

### 頭を柔らかくする脳トレ

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

**In-app purchases:** none


### 東大王からの挑戦状

[App page](https://appshunter.io/ios/app/iq/id1442481744)

Test your intellect with challenging brain-training quizzes and puzzles. Solve over 150 unique riddles using your intuition and deduction skills. Can you conquer all the puzzles and prove your intelligence?

**Highlights:** Challenging brain-training quizzes, Over 150 riddle-style puzzles, Intuitive deduction gameplay, Tap-based answer input, Unlimited attempts to solve

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### 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.

### Is 東大王からの挑戦状 free?

東大王からの挑戦状 is free to download, with no in-app purchases.

### Which has better reviews, 頭を柔らかくする脳トレ or 東大王からの挑戦状?

頭を柔らかくする脳トレ is rated higher. 頭を柔らかくする脳トレ averages 4.6 out of 5 from 14 ratings, while 東大王からの挑戦状 averages 4.1 from 22 ratings.

### Do 頭を柔らかくする脳トレ or 東大王からの挑戦状 have ads?

Both 頭を柔らかくする脳トレ and 東大王からの挑戦状 show ads.

### Which is updated more often, 頭を柔らかくする脳トレ or 東大王からの挑戦状?

頭を柔らかくする脳トレ ships an update every 2 months, and 東大王からの挑戦状 every 3 months. Most recently, 頭を柔らかくする脳トレ was updated on October 26, 2026 and 東大王からの挑戦状 on October 29, 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.*