# 電験三種 理論ドリル − 計算問題を無限演習 vs Denken 3rd Class

The clearest difference is ads: 電験三種 理論ドリル − 計算問題を無限演習 at none against Denken 3rd Class's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

電験三種 理論ドリル − 計算問題を無限演習 ships an update every 2 days, Denken 3rd Class every 3 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 電験三種 理論ドリル − 計算問題を無限演習 | Denken 3rd Class |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 3 days |
| Size | 26 MB | 65 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Moeki Kozawa](https://appshunter.io/developer/1770452138) | [hyuncheol seo](https://appshunter.io/developer/6797554122) |

## What reviewers say

### 電験三種 理論ドリル − 計算問題を無限演習

[App page](https://appshunter.io/ios/app/id6787009839)

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

**In-app purchases:** none


### Denken 3rd Class

[App page](https://appshunter.io/ios/app/denken-3rd-class-passrun/id6809243739)

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

**In-app purchases:** none


## Frequently asked questions

### Is 電験三種 理論ドリル − 計算問題を無限演習 free?

電験三種 理論ドリル − 計算問題を無限演習 is free to download, with no in-app purchases.

### Is Denken 3rd Class free?

Denken 3rd Class is free to download, with no in-app purchases.

### Do 電験三種 理論ドリル − 計算問題を無限演習 or Denken 3rd Class have ads?

Denken 3rd Class shows ads; 電験三種 理論ドリル − 計算問題を無限演習 does not.

### Which is updated more often, 電験三種 理論ドリル − 計算問題を無限演習 or Denken 3rd Class?

電験三種 理論ドリル − 計算問題を無限演習 ships an update every 2 days, and Denken 3rd Class every 3 days. Most recently, 電験三種 理論ドリル − 計算問題を無限演習 was updated on October 24, 2026 and Denken 3rd Class on October 31, 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.*