# ２級ボイラー技士試験 「30日合格プログラム」 vs 公害防止管理者大気4種対策

The clearest difference is update cadence: 公害防止管理者大気4種対策 at weekly against ２級ボイラー技士試験 「30日合格プログラム」's every 13 months. 公害防止管理者大気4種対策 also leads on price ($4.99 vs $9.99). ２級ボイラー技士試験 「30日合格プログラム」's advantage is iOS requirement (11.0 vs 15.1). On ads, in-app purchases and device support there is nothing between them.

２級ボイラー技士試験 「30日合格プログラム」 costs $9.99 and 公害防止管理者大気4種対策 $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

２級ボイラー技士試験 「30日合格プログラム」 ships an update every 13 months, 公害防止管理者大気4種対策 weekly. The most recent releases landed on September 21, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | ２級ボイラー技士試験 「30日合格プログラム」 | 公害防止管理者大気4種対策 |
| --- | --- | --- |
| Price | $9.99 | **$4.99** |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Weekly** |
| Monetization | Paid | — |
| Size | 24 MB | 34 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ReCorrect Inc.](https://appshunter.io/developer/1141646408) | [satoshi yoshida](https://appshunter.io/developer/1873856165) |

## What reviewers say

### ２級ボイラー技士試験 「30日合格プログラム」

[App page](https://appshunter.io/ios/app/30/id1618369689)

This app helps you prepare for the Level 2 Boiler Engineer exam. It analyzes past questions to focus on essential material, offering mock exams and targeted practice for weak subjects. Aimed at efficient study for exam success.

**Highlights:** Past question analysis, Efficient study support, Randomized mock exams, Targeted weak subject practice, Progress tracking

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

**In-app purchases:** none


### 公害防止管理者大気4種対策

[App page](https://appshunter.io/ios/app/4/id6775329326)

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

**In-app purchases:** none


## Frequently asked questions

### Is ２級ボイラー技士試験 「30日合格プログラム」 free?

２級ボイラー技士試験 「30日合格プログラム」 costs $9.99, with no in-app purchases.

### Is 公害防止管理者大気4種対策 free?

公害防止管理者大気4種対策 costs $4.99, with no in-app purchases.

### Do ２級ボイラー技士試験 「30日合格プログラム」 or 公害防止管理者大気4種対策 have ads?

Neither ２級ボイラー技士試験 「30日合格プログラム」 nor 公害防止管理者大気4種対策 shows ads.

### Which is updated more often, ２級ボイラー技士試験 「30日合格プログラム」 or 公害防止管理者大気4種対策?

２級ボイラー技士試験 「30日合格プログラム」 ships an update every 13 months, and 公害防止管理者大気4種対策 weekly. Most recently, ２級ボイラー技士試験 「30日合格プログラム」 was updated on September 21, 2026 and 公害防止管理者大気4種対策 on September 9, 2026.

---

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