# 二級ボイラー技士Pass vs 危険物乙4コンプリートマスター解説付

The clearest difference is ads: 危険物乙4コンプリートマスター解説付 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. 二級ボイラー技士Pass sells 1 one-off in-app purchase and 危険物乙4コンプリートマスター解説付 sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

二級ボイラー技士Pass ships an update weekly, 危険物乙4コンプリートマスター解説付 every 6 days. The most recent releases landed on September 9, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | 二級ボイラー技士Pass | 危険物乙4コンプリートマスター解説付 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 6 days** |
| Size | 45 MB | 108 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KANDK](https://appshunter.io/developer/1867080143) | [BEAK,K.K.](https://appshunter.io/developer/1808079760) |

## What reviewers say

### 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 |


### 危険物乙4コンプリートマスター解説付

[App page](https://appshunter.io/ios/app/4/id6772826132)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 危険物乙4サブスクリプション | $2.99 | per month |
| 危険物乙4買い切りプラン | $22.99 | one-time |


## Frequently asked questions

### 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.

### Is 危険物乙4コンプリートマスター解説付 free?

危険物乙4コンプリートマスター解説付 is free to download, with in-app purchases available.

### Do 二級ボイラー技士Pass or 危険物乙4コンプリートマスター解説付 have ads?

二級ボイラー技士Pass shows ads; 危険物乙4コンプリートマスター解説付 does not.

### Which is updated more often, 二級ボイラー技士Pass or 危険物乙4コンプリートマスター解説付?

二級ボイラー技士Pass ships an update weekly, and 危険物乙4コンプリートマスター解説付 every 6 days. Most recently, 二級ボイラー技士Pass was updated on September 9, 2026 and 危険物乙4コンプリートマスター解説付 on September 23, 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.*