# エネルギー管理士 試験対策 vs 危険物乙4 合格予測 問題集・模試

The clearest difference is iOS requirement: エネルギー管理士 試験対策 at 15.1 against 危険物乙4 合格予測 問題集・模試's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. エネルギー管理士 試験対策 sells 10 one-off in-app purchases and 危険物乙4 合格予測 問題集・模試 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

エネルギー管理士 試験対策 ships an update every 11 days, 危険物乙4 合格予測 問題集・模試 fortnightly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | エネルギー管理士 試験対策 | 危険物乙4 合格予測 問題集・模試 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 11 days** | Fortnightly |
| Size | 54 MB | 3 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [TAKANORI TAKEUCHI](https://appshunter.io/developer/1871324782) | [Takaho Hayashi](https://appshunter.io/developer/6788691940) |

## What reviewers say

### エネルギー管理士 試験対策

[App page](https://appshunter.io/ios/app/id6768010528)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 課目Ⅱ 熱と流体 基本問題 | $2.99 | one-time |
| 課目Ⅲ 燃料と燃焼 基本問題 | $2.99 | one-time |
| 課目Ⅳ 熱利用設備 基本問題 | $2.99 | one-time |
| 課目Ⅰ エネルギー総合管理及び法規 論点まとめ | $2.99 | one-time |
| 課目Ⅱ 電気の基礎 論点まとめ | $2.99 | one-time |
| 課目Ⅲ 電気設備及び機器 論点まとめ | $2.99 | one-time |
| 課目Ⅳ 電力応用 論点まとめ | $2.99 | one-time |
| 課目Ⅱ 熱と流体の流れの基礎 論点まとめ | $2.99 | one-time |
| 課目Ⅲ 燃料と燃焼 論点まとめ | $2.99 | one-time |
| 課目Ⅳ 熱利用設備 論点まとめ | $2.99 | one-time |


### 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 試験対策 free?

エネルギー管理士 試験対策 is free to download, with in-app purchases available.

### 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 試験対策 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 試験対策 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 試験対策 or 危険物乙4 合格予測 問題集・模試?

エネルギー管理士 試験対策 ships an update every 11 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 試験対策 was updated on November 5, 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.*