# 2級ボイラーの森 vs 消防設備士第4類【甲乙対応】（過去問ドリル)

The clearest difference is in-app purchases: 消防設備士第4類【甲乙対応】（過去問ドリル) at none against 2級ボイラーの森's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 2級ボイラーの森 sells 1 one-off in-app purchase. 消防設備士第4類【甲乙対応】（過去問ドリル) asks for nothing beyond the download.

2級ボイラーの森 ships an update every 3 weeks, 消防設備士第4類【甲乙対応】（過去問ドリル) every 2 weeks. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 2級ボイラーの森 | 消防設備士第4類【甲乙対応】（過去問ドリル) |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 99 MB | 60 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [合同会社OLA](https://appshunter.io/developer/1832165711) | [ドリルラボ](https://appshunter.io/developer/1802311479) |

## What reviewers say

### 2級ボイラーの森

[App page](https://appshunter.io/ios/app/2/id6747311296)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| すべての年度がアンロックされます | $3.99 | one-time |


### 消防設備士第4類【甲乙対応】（過去問ドリル)

[App page](https://appshunter.io/ios/app/4/id6768689561)

This app offers a comprehensive drill of 282 past exam questions with detailed explanations for the Fire Equipment Officer Type 4 exam. It features three learning modes: by unit, by level, and intensive training, along with a performance sheet to track progress and an exam exemption search function.

**Highlights:** 282 past exam questions with detailed explanations, Three learning modes: by unit, by level, intensive training, Performance sheet for goal setting and progress tracking, Exam exemption search function, Bookmark feature for important questions

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

**In-app purchases:** none


## Frequently asked questions

### Is 2級ボイラーの森 free?

2級ボイラーの森 is free to download, with in-app purchases available.

### Is 消防設備士第4類【甲乙対応】（過去問ドリル) free?

消防設備士第4類【甲乙対応】（過去問ドリル) is free to download, with no in-app purchases.

### Do 2級ボイラーの森 or 消防設備士第4類【甲乙対応】（過去問ドリル) have ads?

Neither 2級ボイラーの森 nor 消防設備士第4類【甲乙対応】（過去問ドリル) shows ads.

### Which is updated more often, 2級ボイラーの森 or 消防設備士第4類【甲乙対応】（過去問ドリル)?

2級ボイラーの森 ships an update every 3 weeks, and 消防設備士第4類【甲乙対応】（過去問ドリル) every 2 weeks. Most recently, 2級ボイラーの森 was updated on October 25, 2026 and 消防設備士第4類【甲乙対応】（過去問ドリル) 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.*