# 頭を柔らかくする脳トレ２ vs 東大王からの挑戦状

頭を柔らかくする脳トレ２ and 東大王からの挑戦状 both sit at 4.1 stars, but that hides the real split: 53% of 頭を柔らかくする脳トレ２'s written reviews are positive against 36% of 東大王からの挑戦状's. 東大王からの挑戦状's advantage is update cadence (every 3 months vs every 10 months) and monetization model (ad-supported vs free with in-app purchases). On price, rating, ratings volume 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.

On the App Store both sit at effectively the same score — 4.1 for 頭を柔らかくする脳トレ２ against 4.1 for 東大王からの挑戦状. Both are backed by a comparable volume of ratings — 21 and 22 respectively. Written reviews are what separate them: 53% of 頭を柔らかくする脳トレ２'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２ ships an update every 10 months, 東大王からの挑戦状 every 3 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 頭を柔らかくする脳トレ２ | 東大王からの挑戦状 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (21 ratings)](https://appshunter.io/ios/app/iq/id1222856278/reviews) | **[4.1 (22 ratings)](https://appshunter.io/ios/app/iq/id1442481744/reviews)** |
| Number of ratings | 21 | **22** |
| Positive reviews | **52.8% of reviews** | 35.7% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 10 months | **Every 3 months** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 97 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２

[App page](https://appshunter.io/ios/app/iq/id1222856278)

This app offers a series of brain-training puzzles designed to refresh your mind. Solve over 500 riddles and logic problems across multiple stages, using hints and keywords to progress. It's a fun way to challenge your cognitive skills and keep your brain agile.

**Highlights:** 500 brain-training puzzles, Stage-based progression, Hint system, Keyword system for progression, Answer reveal option, Return to previous stages

**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２ free?

頭を柔らかくする脳トレ２ 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２ or 東大王からの挑戦状?

東大王からの挑戦状 is rated higher. 頭を柔らかくする脳トレ２ averages 4.1 out of 5 from 21 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２ or 東大王からの挑戦状 have ads?

Both 頭を柔らかくする脳トレ２ 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２ or 東大王からの挑戦状?

頭を柔らかくする脳トレ２ ships an update every 10 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２ was updated on October 24, 2026 and 東大王からの挑戦状 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.*