# 公害防止管理者試験・大気系過去問 vs 公害防止Pass

The clearest difference is in-app purchases: 公害防止管理者試験・大気系過去問 at none against 公害防止Pass's 1. 公害防止Pass's advantage is update cadence (weekly vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 公害防止Pass sells 1 one-off in-app purchase. 公害防止管理者試験・大気系過去問 asks for nothing beyond the download.

公害防止管理者試験・大気系過去問 ships an update every 5 months, 公害防止Pass weekly. The most recent releases landed on September 10, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 公害防止管理者試験・大気系過去問 | 公害防止Pass |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 months | **Weekly** |
| Size | 86 MB | 43 MB |
| Requires iOS | 15.2 | **15.1** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ai Jitou](https://appshunter.io/developer/1588618385) | [KANDK](https://appshunter.io/developer/1867080143) |

## What reviewers say

### 公害防止管理者試験・大気系過去問

[App page](https://appshunter.io/ios/app/id1592431330)

**Features:** macOS Compatibility

**In-app purchases:** none


### 公害防止Pass

[App page](https://appshunter.io/ios/app/pass/id6761719666)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムプラン | $1.99 | one-time |


## Frequently asked questions

### Is 公害防止管理者試験・大気系過去問 free?

公害防止管理者試験・大気系過去問 is free to download, with no in-app purchases.

### Is 公害防止Pass free?

公害防止Pass is free to download, with in-app purchases available.

### Do 公害防止管理者試験・大気系過去問 or 公害防止Pass have ads?

Both 公害防止管理者試験・大気系過去問 and 公害防止Pass show ads.

### Which is updated more often, 公害防止管理者試験・大気系過去問 or 公害防止Pass?

公害防止管理者試験・大気系過去問 ships an update every 5 months, and 公害防止Pass weekly. Most recently, 公害防止管理者試験・大気系過去問 was updated on September 10, 2026 and 公害防止Pass on September 20, 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.*