# 危険物乙4Pass vs 危険物乙4・乙種全類 一問一答問題集

The clearest difference is ads: 危険物乙4・乙種全類 一問一答問題集 at none against 危険物乙4Pass's shown. 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・乙種全類 一問一答問題集 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

危険物乙4Pass ships an update weekly, 危険物乙4・乙種全類 一問一答問題集 every 4 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 危険物乙4Pass | 危険物乙4・乙種全類 一問一答問題集 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 43 MB | 11 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [KANDK](https://appshunter.io/developer/1867080143) | [Particles and Waves](https://appshunter.io/developer/1812653811) |

## 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・乙種全類 一問一答問題集

[App page](https://appshunter.io/ios/app/4/id6801183486)

This app offers a question-and-answer format with detailed explanations for Japanese hazardous materials handler qualification exams. It covers various categories of hazardous materials and includes practice tests to assess readiness. Users can track progress and identify weak areas for targeted study.

**Highlights:** Q&A format for key topics, Detailed explanations for all answer choices, Practice tests simulating exam conditions, Progress tracking and weak point identification, Anonymous error reporting and correction, Study planning based on exam date

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Full Unlock) | $2.99 | 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・乙種全類 一問一答問題集 free?

危険物乙4・乙種全類 一問一答問題集 is free to download, with in-app purchases available.

### Do 危険物乙4Pass or 危険物乙4・乙種全類 一問一答問題集 have ads?

危険物乙4Pass shows ads; 危険物乙4・乙種全類 一問一答問題集 does not.

### Which is updated more often, 危険物乙4Pass or 危険物乙4・乙種全類 一問一答問題集?

危険物乙4Pass ships an update weekly, and 危険物乙4・乙種全類 一問一答問題集 every 4 days. Most recently, 危険物乙4Pass was updated on October 28, 2026 and 危険物乙4・乙種全類 一問一答問題集 on October 25, 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.*