# 電気工事士2種：ゼロから学べる第二種電気工事士の基礎＋過去問 vs 公害防止管理者水質4種対策

The clearest difference is price: 電気工事士2種：ゼロから学べる第二種電気工事士の基礎＋過去問 at Free against 公害防止管理者水質4種対策's $4.99. 電気工事士2種：ゼロから学べる第二種電気工事士の基礎＋過去問 also leads on update cadence (every 5 days vs monthly) and iOS requirement (13.0 vs 15.1). 公害防止管理者水質4種対策's advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.

電気工事士2種：ゼロから学べる第二種電気工事士の基礎＋過去問 is free to download; 公害防止管理者水質4種対策 costs $4.99 up front. 電気工事士2種：ゼロから学べる第二種電気工事士の基礎＋過去問 sells 1 one-off in-app purchase. 公害防止管理者水質4種対策 asks for nothing beyond the download.

電気工事士2種：ゼロから学べる第二種電気工事士の基礎＋過去問 ships an update every 5 days, 公害防止管理者水質4種対策 monthly. The most recent releases landed on October 14, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | 電気工事士2種：ゼロから学べる第二種電気工事士の基礎＋過去問 | 公害防止管理者水質4種対策 |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Positive reviews | 90.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Monthly |
| Monetization | Free | — |
| Size | 143 MB | 34 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GINOAPPS LLC.](https://appshunter.io/developer/1482621114) | [satoshi yoshida](https://appshunter.io/developer/1873856165) |

## What reviewers say

### 電気工事士2種：ゼロから学べる第二種電気工事士の基礎＋過去問

[App page](https://appshunter.io/ios/app/2/id6744034422)

Master the fundamentals and past exam questions for the Class 2 Electrician exam. This app offers efficient learning through a two-step process, covering over 500 materials and past questions with detailed explanations. Prepare effectively for your written exam with smart review and targeted practice modes.

**Highlights:** Step-by-step learning: basics to past questions, Over 500 study materials and past questions, Detailed explanations with diagrams, Adaptive past question suggestions, Spaced repetition for knowledge retention, Exam-focused practice mode

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 完全版プラン（買い切り） | $5.99 | one-time |


### 公害防止管理者水質4種対策

[App page](https://appshunter.io/ios/app/4/id6775329695)

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

**In-app purchases:** none


## Frequently asked questions

### Is 電気工事士2種：ゼロから学べる第二種電気工事士の基礎＋過去問 free?

電気工事士2種：ゼロから学べる第二種電気工事士の基礎＋過去問 is free to download, with in-app purchases available.

### Is 公害防止管理者水質4種対策 free?

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

### Do 電気工事士2種：ゼロから学べる第二種電気工事士の基礎＋過去問 or 公害防止管理者水質4種対策 have ads?

Neither 電気工事士2種：ゼロから学べる第二種電気工事士の基礎＋過去問 nor 公害防止管理者水質4種対策 shows ads.

### Which is updated more often, 電気工事士2種：ゼロから学べる第二種電気工事士の基礎＋過去問 or 公害防止管理者水質4種対策?

電気工事士2種：ゼロから学べる第二種電気工事士の基礎＋過去問 ships an update every 5 days, and 公害防止管理者水質4種対策 monthly. Most recently, 電気工事士2種：ゼロから学べる第二種電気工事士の基礎＋過去問 was updated on October 14, 2026 and 公害防止管理者水質4種対策 on October 2, 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.*