# 危険物乙種Pass vs 公害防止管理者 大気1種 試験対策一問一答

The clearest difference is iOS requirement: 危険物乙種Pass at 15.1 against 公害防止管理者 大気1種 試験対策一問一答's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 危険物乙種Pass sells 1 one-off in-app purchase and 公害防止管理者 大気1種 試験対策一問一答 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | 危険物乙種Pass | 公害防止管理者 大気1種 試験対策一問一答 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | — |
| Size | 43 MB | 6 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KANDK](https://appshunter.io/developer/1867080143) | [Takaho Hayashi](https://appshunter.io/developer/6788691940) |

## What reviewers say

### 危険物乙種Pass

[App page](https://appshunter.io/ios/app/pass-12356/id6777876022)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 危険物乙種Pass プレミアム | $1.99 | one-time |


### 公害防止管理者 大気1種 試験対策一問一答

[App page](https://appshunter.io/ios/app/1/id6800722356)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 全機能解除 | $4.99 | one-time |


## Frequently asked questions

### Is 危険物乙種Pass free?

危険物乙種Pass is free to download, with in-app purchases available.

### Is 公害防止管理者 大気1種 試験対策一問一答 free?

公害防止管理者 大気1種 試験対策一問一答 is free to download, with in-app purchases available.

### Do 危険物乙種Pass or 公害防止管理者 大気1種 試験対策一問一答 have ads?

Neither 危険物乙種Pass nor 公害防止管理者 大気1種 試験対策一問一答 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.*