# 第1種衛生管理者の森 vs 危険物乙4 問題集

The clearest difference is update cadence: 危険物乙4 問題集 at weekly against 第1種衛生管理者の森's monthly. 第1種衛生管理者の森's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 第1種衛生管理者の森 sells 1 one-off in-app purchase and 危険物乙4 問題集 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

第1種衛生管理者の森 ships an update monthly, 危険物乙4 問題集 weekly. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 第1種衛生管理者の森 | 危険物乙4 問題集 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Size | 98 MB | 14 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [合同会社OLA](https://appshunter.io/developer/1832165711) | [RIVERSHIP](https://appshunter.io/developer/6780804499) |

## What reviewers say

### 第1種衛生管理者の森

[App page](https://appshunter.io/ios/app/1/id6763957280)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 全年度アンロック | $2.99 | one-time |


### 危険物乙4 問題集

[App page](https://appshunter.io/ios/app/4/id6785840919)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 全問題アンロック | $4.99 | one-time |


## Frequently asked questions

### Is 第1種衛生管理者の森 free?

第1種衛生管理者の森 is free to download, with in-app purchases available.

### Is 危険物乙4 問題集 free?

危険物乙4 問題集 is free to download, with in-app purchases available.

### Do 第1種衛生管理者の森 or 危険物乙4 問題集 have ads?

Neither 第1種衛生管理者の森 nor 危険物乙4 問題集 shows ads.

### Which is updated more often, 第1種衛生管理者の森 or 危険物乙4 問題集?

第1種衛生管理者の森 ships an update monthly, and 危険物乙4 問題集 weekly. Most recently, 第1種衛生管理者の森 was updated on October 28, 2026 and 危険物乙4 問題集 on October 24, 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.*