# 放射線取扱主任者一問一答 vs 公害防止管理者 水質1種 合格ナビ

The clearest difference is price: 公害防止管理者 水質1種 合格ナビ at Free against 放射線取扱主任者一問一答's $2.99. 放射線取扱主任者一問一答's advantage is in-app purchases (none vs 2) and iOS requirement (15.1 vs 17.0).

公害防止管理者 水質1種 合格ナビ is free to download; 放射線取扱主任者一問一答 costs $2.99 up front. 公害防止管理者 水質1種 合格ナビ sells 2 one-off in-app purchases. 放射線取扱主任者一問一答 asks for nothing beyond the download.

## The numbers

| Metric | 放射線取扱主任者一問一答 | 公害防止管理者 水質1種 合格ナビ |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 11 days |
| Size | 25 MB | 4 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [TAKASHI NISHIHARA](https://appshunter.io/developer/1887765352) | [Shunya Iwasaki](https://appshunter.io/developer/1796095304) |

## What reviewers say

### 放射線取扱主任者一問一答

[App page](https://appshunter.io/ios/app/id6761297490)

**In-app purchases:** none


### 公害防止管理者 水質1種 合格ナビ

[App page](https://appshunter.io/ios/app/1/id6772624961)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 実戦問題パック 2026 | $3.99 | one-time |
| プレミアム（本体全機能解放） | $14.99 | one-time |


## Frequently asked questions

### Is 放射線取扱主任者一問一答 free?

放射線取扱主任者一問一答 costs $2.99, with no in-app purchases.

### Is 公害防止管理者 水質1種 合格ナビ free?

公害防止管理者 水質1種 合格ナビ is free to download, with in-app purchases available.

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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.*