# 四字熟語 vs 読めないと恥ずかしい漢字

The clearest difference is in-app purchases: 読めないと恥ずかしい漢字 at none against 四字熟語's 1. 読めないと恥ずかしい漢字 also leads on ratings volume (45 vs 11) and iOS requirement (14.0 vs 17.0). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. 四字熟語 sells 1 one-off in-app purchase. 読めないと恥ずかしい漢字 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for 四字熟語 against 4.6 for 読めないと恥ずかしい漢字. Both are backed by a comparable volume of ratings — 11 and 45 respectively.

四字熟語 ships an update every 6 months, 読めないと恥ずかしい漢字 every 4 months. The most recent releases landed on August 13, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | 四字熟語 | 読めないと恥ずかしい漢字 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (11 ratings)](https://appshunter.io/ios/app/1000/id521600970/reviews)** | [4.6 (45 ratings)](https://appshunter.io/ios/app/id853672305/reviews) |
| Number of ratings | 11 | **45** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 6 months | **Every 4 months** |
| Monetization | Ad-supported | — |
| Size | 66 MB | 39 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 |


### 読めないと恥ずかしい漢字

[App page](https://appshunter.io/ios/app/id853672305)

**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 読めないと恥ずかしい漢字 free?

読めないと恥ずかしい漢字 is free to download, with no in-app purchases.

### Which has better reviews, 四字熟語 or 読めないと恥ずかしい漢字?

四字熟語 is rated higher. 四字熟語 averages 4.7 out of 5 from 11 ratings, while 読めないと恥ずかしい漢字 averages 4.6 from 45 ratings.

### Do 四字熟語 or 読めないと恥ずかしい漢字 have ads?

Both 四字熟語 and 読めないと恥ずかしい漢字 show ads.

### Which is updated more often, 四字熟語 or 読めないと恥ずかしい漢字?

四字熟語 ships an update every 6 months, and 読めないと恥ずかしい漢字 every 4 months. Most recently, 四字熟語 was updated on August 13, 2026 and 読めないと恥ずかしい漢字 on September 21, 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.*