# エネルギー管理士マスター vs 危険物乙4 合格予測 問題集・模試

The clearest difference is in-app purchases: エネルギー管理士マスター at none against 危険物乙4 合格予測 問題集・模試's 1. エネルギー管理士マスター also leads on update cadence (every 2 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 危険物乙4 合格予測 問題集・模試 sells 1 one-off in-app purchase. エネルギー管理士マスター asks for nothing beyond the download.

エネルギー管理士マスター ships an update every 2 days, 危険物乙4 合格予測 問題集・模試 fortnightly. Both last shipped on October 31, 2026.

## The numbers

| Metric | エネルギー管理士マスター | 危険物乙4 合格予測 問題集・模試 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Fortnightly |
| Size | 9 MB | 3 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Hirokazu Kurokawa](https://appshunter.io/developer/463196366) | [Takaho Hayashi](https://appshunter.io/developer/6788691940) |

## What reviewers say

### エネルギー管理士マスター

[App page](https://appshunter.io/ios/app/id6763693561)

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

**In-app purchases:** none


### 危険物乙4 合格予測 問題集・模試

[App page](https://appshunter.io/ios/app/4/id6819255265)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 全機能解除 | $4.99 | one-time |


## Frequently asked questions

### Is エネルギー管理士マスター free?

エネルギー管理士マスター is free to download, with no in-app purchases.

### Is 危険物乙4 合格予測 問題集・模試 free?

危険物乙4 合格予測 問題集・模試 is free to download, with in-app purchases available.

### Do エネルギー管理士マスター or 危険物乙4 合格予測 問題集・模試 have ads?

Neither エネルギー管理士マスター nor 危険物乙4 合格予測 問題集・模試 shows ads.

### Which is updated more often, エネルギー管理士マスター or 危険物乙4 合格予測 問題集・模試?

エネルギー管理士マスター ships an update every 2 days, and 危険物乙4 合格予測 問題集・模試 fortnightly. Most recently, エネルギー管理士マスター was updated on October 31, 2026 and 危険物乙4 合格予測 問題集・模試 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.*