# 四字熟語 vs 脳トレ！大人の漢字ナンクロ

The clearest difference is in-app purchases: 脳トレ！大人の漢字ナンクロ at none against 四字熟語's 1. 脳トレ！大人の漢字ナンクロ also leads on update cadence (every 2 months vs every 6 months) and iOS requirement (14.0 vs 17.0). 四字熟語's advantage is rating (4.7 vs 4.4). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. 四字熟語 sells 1 one-off in-app purchase. 脳トレ！大人の漢字ナンクロ asks for nothing beyond the download.

四字熟語 holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 11 and 21 respectively.

四字熟語 ships an update every 6 months, 脳トレ！大人の漢字ナンクロ every 2 months. The most recent releases landed on August 13, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | 四字熟語 | 脳トレ！大人の漢字ナンクロ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (11 ratings)](https://appshunter.io/ios/app/1000/id521600970/reviews)** | [4.4 (21 ratings)](https://appshunter.io/ios/app/id1527701421/reviews) |
| Number of ratings | 11 | **21** |
| Positive reviews | — | 58.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Ad-supported | — |
| Size | 66 MB | 36 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 9+ | 17+ |
| Developer | [StudySwitch, Inc.](https://appshunter.io/developer/1368900403) | [nullhouse Inc.](https://appshunter.io/developer/853672308) |

## What reviewers say

### 四字熟語

[App page](https://appshunter.io/ios/app/1000/id521600970)

Test your knowledge of Japanese four-character idioms with this handwriting-based quiz. It features 1000 questions across six difficulty levels, suitable for learners from elementary school to advanced enthusiasts. Aim to master all the idioms and improve your Kanji skills.

**Highlights:** Handwriting input for Kanji, 1000 questions on four-character idioms, Six difficulty levels, Suitable for all ages, Progress tracking, Error reporting

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告を非表示にする | $2.99 | one-time |


### 脳トレ！大人の漢字ナンクロ

[App page](https://appshunter.io/ios/app/id1527701421)

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

**In-app purchases:** none


## Frequently asked questions

### Is 四字熟語 free?

四字熟語 is free to download, with in-app purchases available.

### Is 脳トレ！大人の漢字ナンクロ free?

脳トレ！大人の漢字ナンクロ is free to download, with no in-app purchases.

### Which has better reviews, 四字熟語 or 脳トレ！大人の漢字ナンクロ?

四字熟語 is rated higher. 四字熟語 averages 4.7 out of 5 from 11 ratings, while 脳トレ！大人の漢字ナンクロ averages 4.4 from 21 ratings.

### Do 四字熟語 or 脳トレ！大人の漢字ナンクロ have ads?

Both 四字熟語 and 脳トレ！大人の漢字ナンクロ show ads.

### Which is updated more often, 四字熟語 or 脳トレ！大人の漢字ナンクロ?

四字熟語 ships an update every 6 months, and 脳トレ！大人の漢字ナンクロ every 2 months. Most recently, 四字熟語 was updated on August 13, 2026 and 脳トレ！大人の漢字ナンクロ on September 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.*