# 危険物乙4Pass vs 危険物乙4 問題集

The clearest difference is ads: 危険物乙4 問題集 at none against 危険物乙4Pass's shown. 危険物乙4Pass's advantage is iOS requirement (15.1 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. 危険物乙4Pass 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.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 10, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | 危険物乙4Pass | 危険物乙4 問題集 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | Weekly |
| Size | 43 MB | 14 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KANDK](https://appshunter.io/developer/1867080143) | [RIVERSHIP](https://appshunter.io/developer/6780804499) |

## What reviewers say

### 危険物乙4Pass

[App page](https://appshunter.io/ios/app/4pass-4/id6768249746)

**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 |


### 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 危険物乙4Pass free?

危険物乙4Pass 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 危険物乙4Pass or 危険物乙4 問題集 have ads?

危険物乙4Pass shows ads; 危険物乙4 問題集 does not.

### Which is updated more often, 危険物乙4Pass or 危険物乙4 問題集?

危険物乙4Pass ships an update weekly, and 危険物乙4 問題集 weekly. Most recently, 危険物乙4Pass was updated on October 10, 2026 and 危険物乙4 問題集 on October 11, 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.*