# 四字熟語 vs Captain C Programming

The clearest difference is iOS requirement: Captain C Programming at 12.0 against 四字熟語's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 四字熟語 sells 1 one-off in-app purchase and Captain C Programming sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

四字熟語 ships an update every 6 months, Captain C Programming every 4 months. The most recent releases landed on August 13, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | 四字熟語 | Captain C Programming |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (11 ratings)](https://appshunter.io/ios/app/1000/id521600970/reviews)** | — |
| Number of ratings | **11** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 months | **Every 4 months** |
| Monetization | Ad-supported | — |
| Size | 66 MB | 259 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [StudySwitch, Inc.](https://appshunter.io/developer/1368900403) | [SOFTHEAVEN](https://appshunter.io/developer/588713602) |

## 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 |


### Captain C Programming

[App page](https://appshunter.io/ios/app/captain-c-programming/id1249134740)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ADS | $1.99 | one-time |


## Frequently asked questions

### Is 四字熟語 free?

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

### Is Captain C Programming free?

Captain C Programming is free to download, with in-app purchases available.

### Do 四字熟語 or Captain C Programming have ads?

Both 四字熟語 and Captain C Programming show ads.

### Which is updated more often, 四字熟語 or Captain C Programming?

四字熟語 ships an update every 6 months, and Captain C Programming every 4 months. Most recently, 四字熟語 was updated on August 13, 2026 and Captain C Programming on September 12, 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.*