# 危険物乙4 過去問・問題集 vs AWSスキルチェック

The clearest difference is review sentiment: AWSスキルチェック at 100% against 危険物乙4 過去問・問題集's 0%. AWSスキルチェック also leads on update cadence (every 4 days vs every 2 weeks). 危険物乙4 過去問・問題集's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

危険物乙4 過去問・問題集 ships an update every 2 weeks, AWSスキルチェック every 4 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | 危険物乙4 過去問・問題集 | AWSスキルチェック |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | Ad-supported | Ad-supported |
| Size | 43 MB | 3 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Naoto Baba](https://appshunter.io/developer/1445524034) | [kouki tanaka](https://appshunter.io/developer/6789175418) |

## What reviewers say

### 危険物乙4 過去問・問題集

[App page](https://appshunter.io/ios/app/4/id6766231307)

This app helps you prepare for the Class B, Type 4 hazardous materials handler exam. It offers practice questions, targeted drills, and mock tests to support self-study and efficient learning during your commute or breaks.

**Highlights:** Past exam questions and explanations, Subject-specific practice, Weakness review, Mock exams, Study history visualization, Bookmarks, Dark mode

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

**In-app purchases:** none


### AWSスキルチェック

[App page](https://appshunter.io/ios/app/aws/id6789175416)

This app helps you visualize and track your AWS skills, acting as a pace-setter for certification studies. It covers 25 services and 387 items, from foundational to practical levels, with gamified elements to keep you motivated. Learn offline and track your progress with detailed visualizations.

**Highlights:** Skill visualization and tracking, Certification study pace-setter, Covers 25 services and 387 items, Gamified learning with XP and level-ups, Progress visualization by service and difficulty, Offline functionality, Links to official AWS documentation

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

**In-app purchases:** none


## Frequently asked questions

### Is 危険物乙4 過去問・問題集 free?

危険物乙4 過去問・問題集 is free to download, with no in-app purchases.

### Is AWSスキルチェック free?

AWSスキルチェック is free to download, with no in-app purchases.

### Do 危険物乙4 過去問・問題集 or AWSスキルチェック have ads?

Both 危険物乙4 過去問・問題集 and AWSスキルチェック show ads.

### Which is updated more often, 危険物乙4 過去問・問題集 or AWSスキルチェック?

危険物乙4 過去問・問題集 ships an update every 2 weeks, and AWSスキルチェック every 4 days. Most recently, 危険物乙4 過去問・問題集 was updated on October 31, 2026 and AWSスキルチェック on October 31, 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.*