# 高圧ガス製造保安責任者 乙種化学 試験対策｜問題集 vs 生物分類技能検定4級 2026年版 問題集 一問一答・模試

The clearest difference is price: 生物分類技能検定4級 2026年版 問題集 一問一答・模試 at Free against 高圧ガス製造保安責任者 乙種化学 試験対策｜問題集's $2.99. 高圧ガス製造保安責任者 乙種化学 試験対策｜問題集's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

生物分類技能検定4級 2026年版 問題集 一問一答・模試 is free to download; 高圧ガス製造保安責任者 乙種化学 試験対策｜問題集 costs $2.99 up front. 生物分類技能検定4級 2026年版 問題集 一問一答・模試 sells 1 one-off in-app purchase. 高圧ガス製造保安責任者 乙種化学 試験対策｜問題集 asks for nothing beyond the download.

## The numbers

| Metric | 高圧ガス製造保安責任者 乙種化学 試験対策｜問題集 | 生物分類技能検定4級 2026年版 問題集 一問一答・模試 |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Daily |
| Monetization | Paid | — |
| Size | 6 MB | 76 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [RYOHEI HORIUCHI](https://appshunter.io/developer/1869799988) | [Signet LLC](https://appshunter.io/developer/1880910401) |

## What reviewers say

### 高圧ガス製造保安責任者 乙種化学 試験対策｜問題集

[App page](https://appshunter.io/ios/app/id6780144544)

This app offers a comprehensive practice question set for the Class B Chemical High-Pressure Gas Manufacturing Safety Engineer exam. It covers all three subjects with 400 multiple-choice questions organized by difficulty, featuring review and mock test modes to help users identify and strengthen weak areas.

**Highlights:** 400 multiple-choice questions, Detailed explanations for each question, Review mode for incorrect answers, Mock test simulation, Randomized question order, Proficiency map for weak areas

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

**In-app purchases:** none


### 生物分類技能検定4級 2026年版 問題集 一問一答・模試

[App page](https://appshunter.io/ios/app/4-2026/id6782890805)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro（広告オフ・全解放） | $4.99 | one-time |


## Frequently asked questions

### Is 高圧ガス製造保安責任者 乙種化学 試験対策｜問題集 free?

高圧ガス製造保安責任者 乙種化学 試験対策｜問題集 costs $2.99, with no in-app purchases.

### Is 生物分類技能検定4級 2026年版 問題集 一問一答・模試 free?

生物分類技能検定4級 2026年版 問題集 一問一答・模試 is free to download, with in-app purchases available.

### Do 高圧ガス製造保安責任者 乙種化学 試験対策｜問題集 or 生物分類技能検定4級 2026年版 問題集 一問一答・模試 have ads?

生物分類技能検定4級 2026年版 問題集 一問一答・模試 shows ads; 高圧ガス製造保安責任者 乙種化学 試験対策｜問題集 does not.

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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.*