# 冷凍三種の森 vs 消防設備士第4類【甲乙対応】（過去問ドリル)

The clearest difference is iOS requirement: 冷凍三種の森 at 13.0 against 消防設備士第4類【甲乙対応】（過去問ドリル)'s 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

冷凍三種の森 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 12, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | 冷凍三種の森 | 消防設備士第4類【甲乙対応】（過去問ドリル) |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 100 MB | 60 MB |
| Requires iOS | **13.0** | 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

### 冷凍三種の森

[App page](https://appshunter.io/ios/app/id6746394545)

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

**In-app purchases:** none


### 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 冷凍三種の森 free?

冷凍三種の森 is free to download, with no in-app purchases.

### 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 冷凍三種の森 or 消防設備士第4類【甲乙対応】（過去問ドリル) have ads?

Neither 冷凍三種の森 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, 冷凍三種の森 or 消防設備士第4類【甲乙対応】（過去問ドリル)?

冷凍三種の森 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, 冷凍三種の森 was updated on October 12, 2026 and 消防設備士第4類【甲乙対応】（過去問ドリル) on October 18, 2026.

---

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