# 2級ボイラーの森 vs ボイラー技士二級 合格ドリル

The clearest difference is in-app purchases: ボイラー技士二級 合格ドリル at none against 2級ボイラーの森's 1. ボイラー技士二級 合格ドリル also leads on update cadence (every 4 days vs every 3 weeks). On price, ads, device support and iOS requirement 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. ボイラー技士二級 合格ドリル asks for nothing beyond the download.

2級ボイラーの森 ships an update every 3 weeks, ボイラー技士二級 合格ドリル every 4 days. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 2級ボイラーの森 | ボイラー技士二級 合格ドリル |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Size | 99 MB | 52 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) | [AFTW LLC](https://appshunter.io/developer/1886356149) |

## 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 |


### ボイラー技士二級 合格ドリル

[App page](https://appshunter.io/ios/app/id6763425772)

**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 ボイラー技士二級 合格ドリル free?

ボイラー技士二級 合格ドリル is free to download, with no in-app purchases.

### Do 2級ボイラーの森 or ボイラー技士二級 合格ドリル have ads?

Neither 2級ボイラーの森 nor ボイラー技士二級 合格ドリル shows ads.

### Which is updated more often, 2級ボイラーの森 or ボイラー技士二級 合格ドリル?

2級ボイラーの森 ships an update every 3 weeks, and ボイラー技士二級 合格ドリル every 4 days. Most recently, 2級ボイラーの森 was updated on October 16, 2026 and ボイラー技士二級 合格ドリル on October 14, 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.*