# 危険物乙4 過去問＆問題集 vs 乙4

The clearest difference is in-app purchases: 危険物乙4 過去問＆問題集 at none against 乙4's 1. 危険物乙4 過去問＆問題集 also leads on iOS requirement (13.0 vs 17.6). On price there is nothing between them.

Both are free to download. 乙4 sells 1 in-app purchase, starting at $4.99 per 7 days. 危険物乙4 過去問＆問題集 asks for nothing beyond the download.

## The numbers

| Metric | 危険物乙4 過去問＆問題集 | 乙4 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Monthly |
| Size | 24 MB | 2 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [TAKASHI MEGURO](https://appshunter.io/developer/1866895041) | [CapCat LLC](https://appshunter.io/developer/1654095841) |

## What reviewers say

### 危険物乙4 過去問＆問題集

[App page](https://appshunter.io/ios/app/4-2026/id6757431635)

**In-app purchases:** none


### 乙4

[App page](https://appshunter.io/ios/app/4-4-2026/id6764290217)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 無料でお試しする | $4.99 | per 7 days |


## 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 乙4 free?

乙4 is free to download, with in-app purchases available.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*