# 危険物乙4 合格ドリル vs 危険物取扱者 乙4 | 2026年対策問題

The clearest difference is price: 危険物乙4 合格ドリル at Free against 危険物取扱者 乙4 | 2026年対策問題's $1.99. 危険物乙4 合格ドリル also leads on iOS requirement (15.1 vs 17.0). 危険物取扱者 乙4 | 2026年対策問題's advantage is ads (none vs shown). On update cadence, in-app purchases and device support there is nothing between them.

危険物乙4 合格ドリル is free to download; 危険物取扱者 乙4 | 2026年対策問題 costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

危険物乙4 合格ドリル ships an update weekly, 危険物取扱者 乙4 | 2026年対策問題 fortnightly. The most recent releases landed on October 11, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | 危険物乙4 合格ドリル | 危険物取扱者 乙4 | 2026年対策問題 |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | — | Paid |
| Size | 53 MB | 5 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AFTW LLC](https://appshunter.io/developer/1886356149) | [Masaki Kobayashi](https://appshunter.io/developer/1882180437) |

## What reviewers say

### 危険物乙4 合格ドリル

[App page](https://appshunter.io/ios/app/4/id6761160536)

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

**In-app purchases:** none


### 危険物取扱者 乙4 | 2026年対策問題

[App page](https://appshunter.io/ios/app/4-2026/id6764314779)

This app offers 700 original practice questions for the Class A Hazardous Materials Handler exam. It organizes difficult points by subject, provides detailed explanations for correct and incorrect answers, and supports offline use. Learn and understand the material thoroughly for exam preparation.

**Highlights:** 700 original practice questions, Detailed explanations for answers, Subject-specific learning, Randomized question order, Review of incorrect answers, Offline access

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

**In-app purchases:** none


## Frequently asked questions

### Is 危険物乙4 合格ドリル free?

危険物乙4 合格ドリル is free to download, with no in-app purchases.

### Is 危険物取扱者 乙4 | 2026年対策問題 free?

危険物取扱者 乙4 | 2026年対策問題 costs $1.99, with no in-app purchases.

### Do 危険物乙4 合格ドリル or 危険物取扱者 乙4 | 2026年対策問題 have ads?

危険物乙4 合格ドリル shows ads; 危険物取扱者 乙4 | 2026年対策問題 does not.

### Which is updated more often, 危険物乙4 合格ドリル or 危険物取扱者 乙4 | 2026年対策問題?

危険物乙4 合格ドリル ships an update weekly, and 危険物取扱者 乙4 | 2026年対策問題 fortnightly. Most recently, 危険物乙4 合格ドリル was updated on October 11, 2026 and 危険物取扱者 乙4 | 2026年対策問題 on October 13, 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.*