# 電験三種 理論ドリル − 計算問題を無限演習 vs ゆるSPI

The clearest difference is in-app purchases: 電験三種 理論ドリル − 計算問題を無限演習 at none against ゆるSPI's 1. ゆるSPI's advantage is update cadence (daily vs every 2 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ゆるSPI sells 1 one-off in-app purchase. 電験三種 理論ドリル − 計算問題を無限演習 asks for nothing beyond the download.

電験三種 理論ドリル − 計算問題を無限演習 ships an update every 2 days, ゆるSPI daily. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 電験三種 理論ドリル − 計算問題を無限演習 | ゆるSPI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 days | **Daily** |
| Size | 26 MB | 199 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Moeki Kozawa](https://appshunter.io/developer/1770452138) | [KAORI YAMAWAKI](https://appshunter.io/developer/1827654606) |

## 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


### ゆるSPI

[App page](https://appshunter.io/ios/app/spi/id6800965787)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム | $1.99 | one-time |


## 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 ゆるSPI free?

ゆるSPI is free to download, with in-app purchases available.

### Do 電験三種 理論ドリル − 計算問題を無限演習 or ゆるSPI have ads?

Neither 電験三種 理論ドリル − 計算問題を無限演習 nor ゆるSPI shows ads.

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

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 ゆるSPI daily. 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 ゆるSPI on October 25, 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.*