# 1級ボイラー技士問題集　りすさんシリーズ 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 1級ボイラー技士問題集　りすさんシリーズ's every 5 months. 公害防止管理者大気4種対策 also leads on iOS requirement (15.1 vs 18.6). 1級ボイラー技士問題集　りすさんシリーズ's advantage is price ($2.99 vs $4.99). On ads, in-app purchases and device support there is nothing between them.

1級ボイラー技士問題集　りすさんシリーズ costs $2.99 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.

1級ボイラー技士問題集　りすさんシリーズ ships an update every 5 months, 公害防止管理者大気4種対策 weekly. The most recent releases landed on September 23, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | 1級ボイラー技士問題集　りすさんシリーズ | 公害防止管理者大気4種対策 |
| --- | --- | --- |
| Price | **$2.99** | $4.99 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | Paid | — |
| Size | 6 MB | 34 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kazuki Baba](https://appshunter.io/developer/903350438) | [satoshi yoshida](https://appshunter.io/developer/1873856165) |

## What reviewers say

### 1級ボイラー技士問題集　りすさんシリーズ

[App page](https://appshunter.io/ios/app/1/id907765157)

Prepare for the Grade 1 Boiler Engineer exam with realistic practice questions. Study by subject with a five-choice format and receive instant feedback on your accuracy. This app covers exam questions from the second half of Reiwa 1 to the first half of Reiwa 7.

**Highlights:** Realistic exam format, Subject-specific study, Five-choice question format, Instant accuracy feedback, Covers Reiwa 1 to Reiwa 7 exams

**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 1級ボイラー技士問題集　りすさんシリーズ free?

1級ボイラー技士問題集　りすさんシリーズ costs $2.99, 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 1級ボイラー技士問題集　りすさんシリーズ or 公害防止管理者大気4種対策 have ads?

Neither 1級ボイラー技士問題集　りすさんシリーズ nor 公害防止管理者大気4種対策 shows ads.

### Which is updated more often, 1級ボイラー技士問題集　りすさんシリーズ or 公害防止管理者大気4種対策?

1級ボイラー技士問題集　りすさんシリーズ ships an update every 5 months, and 公害防止管理者大気4種対策 weekly. Most recently, 1級ボイラー技士問題集　りすさんシリーズ was updated on September 23, 2026 and 公害防止管理者大気4種対策 on September 9, 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.*