# 乙4 vs 第2種放射線取扱主任者 | 2026年対策問題

The clearest difference is price: 乙4 at Free against 第2種放射線取扱主任者 | 2026年対策問題's $1.99. 第2種放射線取扱主任者 | 2026年対策問題's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

乙4 is free to download; 第2種放射線取扱主任者 | 2026年対策問題 costs $1.99 up front. 乙4 sells 1 in-app purchase, starting at $4.99 per 7 days. 第2種放射線取扱主任者 | 2026年対策問題 asks for nothing beyond the download.

## The numbers

| Metric | 乙4 | 第2種放射線取扱主任者 | 2026年対策問題 |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | — |
| Size | 2 MB | 5 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [CapCat LLC](https://appshunter.io/developer/1654095841) | [Masaki Kobayashi](https://appshunter.io/developer/1882180437) |

## What reviewers say

### 乙4

[App page](https://appshunter.io/ios/app/4-4-2026/id6764290217)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 無料でお試しする | $4.99 | per 7 days |


### 第2種放射線取扱主任者 | 2026年対策問題

[App page](https://appshunter.io/ios/app/2-2026/id6786989165)

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

**In-app purchases:** none


## Frequently asked questions

### Is 乙4 free?

乙4 is free to download, with in-app purchases available.

### Is 第2種放射線取扱主任者 | 2026年対策問題 free?

第2種放射線取扱主任者 | 2026年対策問題 costs $1.99, with no in-app purchases.

### Do 乙4 or 第2種放射線取扱主任者 | 2026年対策問題 have ads?

Neither 乙4 nor 第2種放射線取扱主任者 | 2026年対策問題 shows ads.

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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.*