# 世界の国 vs 四字熟語の王様

The clearest difference is price: 四字熟語の王様 at Free against 世界の国's $1.99. 四字熟語の王様 also leads on update cadence (every 5 weeks vs every 23 months). 世界の国's advantage is in-app purchases (none vs 3) and ads (none vs shown). On device support there is nothing between them.

四字熟語の王様 is free to download; 世界の国 costs $1.99 up front. 四字熟語の王様 sells 3 in-app purchases, starting at $2.99 per month. 世界の国 asks for nothing beyond the download.

世界の国 ships an update every 23 months, 四字熟語の王様 every 5 weeks. Both last shipped on October 30, 2026.

## The numbers

| Metric | 世界の国 | 四字熟語の王様 |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 23 months | **Every 5 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 37 MB | 138 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Masahiro Tomosada](https://appshunter.io/developer/1587710118) | [HANAUTA INC.](https://appshunter.io/developer/492009717) |

## What reviewers say

### 世界の国

[App page](https://appshunter.io/ios/app/id1607653457)

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

**In-app purchases:** none


### 四字熟語の王様

[App page](https://appshunter.io/ios/app/and/id1611707530)

Master Japanese four-character idioms with this quiz-style learning app. It offers over 3000 questions in various formats, making study sessions short and engaging. Ideal for exam preparation and cultural understanding.

**Highlights:** Over 3000 questions, Quiz-like learning, Short play sessions, Game-like progression, Exam preparation, Easy Q/A format

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 特訓プラン | $2.99 | per month |
| 特訓プラン | $15.99 | per 6 months |
| 特訓プラン | $25.49 | per year |


## Frequently asked questions

### Is 世界の国 free?

世界の国 costs $1.99, with no in-app purchases.

### Is 四字熟語の王様 free?

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

### Do 世界の国 or 四字熟語の王様 have ads?

四字熟語の王様 shows ads; 世界の国 does not.

### Which is updated more often, 世界の国 or 四字熟語の王様?

世界の国 ships an update every 23 months, and 四字熟語の王様 every 5 weeks. Most recently, 世界の国 was updated on October 30, 2026 and 四字熟語の王様 on October 30, 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.*