# 危険物乙4コンプリートマスター解説付 vs 危険物乙4 問題集

危険物乙4コンプリートマスター解説付 and 危険物乙4 問題集 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. 危険物乙4コンプリートマスター解説付 sells 2 in-app purchases, starting at $2.99 per month 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 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 危険物乙4コンプリートマスター解説付 | 危険物乙4 問題集 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Size | 108 MB | 14 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [BEAK,K.K.](https://appshunter.io/developer/1808079760) | [RIVERSHIP](https://appshunter.io/developer/6780804499) |

## What reviewers say

### 危険物乙4コンプリートマスター解説付

[App page](https://appshunter.io/ios/app/4/id6772826132)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 危険物乙4サブスクリプション | $2.99 | per month |
| 危険物乙4買い切りプラン | $22.99 | 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4コンプリートマスター解説付 free?

危険物乙4コンプリートマスター解説付 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4コンプリートマスター解説付 or 危険物乙4 問題集 have ads?

Neither 危険物乙4コンプリートマスター解説付 nor 危険物乙4 問題集 shows ads.

### Which is updated more often, 危険物乙4コンプリートマスター解説付 or 危険物乙4 問題集?

危険物乙4コンプリートマスター解説付 ships an update weekly, and 危険物乙4 問題集 weekly. Most recently, 危険物乙4コンプリートマスター解説付 was updated on October 28, 2026 and 危険物乙4 問題集 on October 24, 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.*