# 第2種作業環境 vs 第三種冷凍機械責任者 問題集

第2種作業環境 and 第三種冷凍機械責任者 問題集 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. 第2種作業環境 sells 1 one-off in-app purchase and 第三種冷凍機械責任者 問題集 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 6 days. The most recent releases landed on October 19, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | 第2種作業環境 | 第三種冷凍機械責任者 問題集 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | Every 6 days |
| Size | 5 MB | 32 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TAKAYUKI OOTA](https://appshunter.io/developer/1855196437) | [Takuro Fukuma](https://appshunter.io/developer/1896728656) |

## What reviewers say

### 第2種作業環境

[App page](https://appshunter.io/ios/app/2/id6757169001)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 第二種作業環境測定士 試験対策 | $1.99 | one-time |


### 第三種冷凍機械責任者 問題集

[App page](https://appshunter.io/ios/app/id6800551619)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 全問解放（買い切り） | $6.99 | one-time |


## Frequently asked questions

### Is 第2種作業環境 free?

第2種作業環境 is free to download, with in-app purchases available.

### Is 第三種冷凍機械責任者 問題集 free?

第三種冷凍機械責任者 問題集 is free to download, with in-app purchases available.

### Do 第2種作業環境 or 第三種冷凍機械責任者 問題集 have ads?

Neither 第2種作業環境 nor 第三種冷凍機械責任者 問題集 shows ads.

### Which is updated more often, 第2種作業環境 or 第三種冷凍機械責任者 問題集?

第2種作業環境 ships an update every 6 days, and 第三種冷凍機械責任者 問題集 every 6 days. Most recently, 第2種作業環境 was updated on October 19, 2026 and 第三種冷凍機械責任者 問題集 on October 15, 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.*