# 電験三種 電力科目 秒トレ：第三種電気主任技術者 試験対策 vs 下水道3種対策

The clearest difference is in-app purchases: 下水道3種対策 at none against 電験三種 電力科目 秒トレ：第三種電気主任技術者 試験対策's 4. 下水道3種対策 also leads on review sentiment (100% vs 86%). 電験三種 電力科目 秒トレ：第三種電気主任技術者 試験対策's advantage is update cadence (every 2 weeks vs every 2 months). On ads, device support and iOS requirement there is nothing between them.

電験三種 電力科目 秒トレ：第三種電気主任技術者 試験対策 ships an update every 2 weeks, 下水道3種対策 every 2 months. The most recent releases landed on October 25, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | 電験三種 電力科目 秒トレ：第三種電気主任技術者 試験対策 | 下水道3種対策 |
| --- | --- | --- |
| Price | **Free** | — |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id1634231869/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 86.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 52 MB | 36 MB |
| Requires iOS | **15.0** | 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

### 電験三種 電力科目 秒トレ：第三種電気主任技術者 試験対策

[App page](https://appshunter.io/ios/app/id1634231869)

This app helps users efficiently study the power systems subject for the Third Class Electrical Engineer exam. It offers one-handed operation for on-the-go learning, personalized problem sets, and detailed progress tracking. Users can review difficult questions and estimate their study completion date.

**Highlights:** One-handed operation for study on the go, Automatic optimal problem settings, Tap to search unknown words, Review difficult problems, Detailed study progress tracking, Estimated study completion date

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 水力発電、火力発電、原子力発電 | $2.99 | one-time |
| その他の発電等、架空送電線路、地中電線路 | $2.99 | one-time |
| 変電所、配電線路、電気材料 | $2.99 | one-time |
| 全問題アンロック | $6.99 | one-time |


### 下水道3種対策

[App page](https://appshunter.io/ios/app/3/id6768249358)

This app offers a comprehensive study guide for the 3rd Class Sewerage Technician certification exam. It features over 10,000 practice questions across 10 chapters, detailed explanations, and progress tracking. Study offline and customize your experience with dark/light themes.

**Highlights:** 10,000+ practice questions, 10 detailed chapters, Chapter-specific practice, Detailed explanations, Progress tracking and statistics, Offline functionality, Dark/light theme support

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

**In-app purchases:** none


## Frequently asked questions

### Is 電験三種 電力科目 秒トレ：第三種電気主任技術者 試験対策 free?

電験三種 電力科目 秒トレ：第三種電気主任技術者 試験対策 is free to download, with in-app purchases available.

### Is 下水道3種対策 free?

Pricing for 下水道3種対策 is not currently listed on the App Store.

### Do 電験三種 電力科目 秒トレ：第三種電気主任技術者 試験対策 or 下水道3種対策 have ads?

Neither 電験三種 電力科目 秒トレ：第三種電気主任技術者 試験対策 nor 下水道3種対策 shows ads.

### Which is updated more often, 電験三種 電力科目 秒トレ：第三種電気主任技術者 試験対策 or 下水道3種対策?

電験三種 電力科目 秒トレ：第三種電気主任技術者 試験対策 ships an update every 2 weeks, and 下水道3種対策 every 2 months. Most recently, 電験三種 電力科目 秒トレ：第三種電気主任技術者 試験対策 was updated on October 25, 2026 and 下水道3種対策 on October 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.*