# 第2種作業環境 vs 二級ボイラー技士Pass

The clearest difference is ads: 第2種作業環境 at none against 二級ボイラー技士Pass's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. 第2種作業環境 sells 1 one-off in-app purchase and 二級ボイラー技士Pass sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

第2種作業環境 ships an update every 6 days, 二級ボイラー技士Pass weekly. Both last shipped on October 31, 2026.

## The numbers

| Metric | 第2種作業環境 | 二級ボイラー技士Pass |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 days** | Weekly |
| Size | 5 MB | 45 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TAKAYUKI OOTA](https://appshunter.io/developer/1855196437) | [KANDK](https://appshunter.io/developer/1867080143) |

## 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 |


### 二級ボイラー技士Pass

[App page](https://appshunter.io/ios/app/pass/id6767974457)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム | $1.99 | 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 二級ボイラー技士Pass free?

二級ボイラー技士Pass is free to download, with in-app purchases available.

### Do 第2種作業環境 or 二級ボイラー技士Pass have ads?

二級ボイラー技士Pass shows ads; 第2種作業環境 does not.

### Which is updated more often, 第2種作業環境 or 二級ボイラー技士Pass?

第2種作業環境 ships an update every 6 days, and 二級ボイラー技士Pass weekly. Most recently, 第2種作業環境 was updated on October 31, 2026 and 二級ボイラー技士Pass 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.*