# 第二種電気工事士  資格試験対策｜D vs 永住許可予測

The clearest difference is in-app purchases: 永住許可予測 at none against 第二種電気工事士  資格試験対策｜D's 1. 永住許可予測 also leads on ads (none vs shown) and update cadence (every 6 days vs every 6 months). 第二種電気工事士  資格試験対策｜D's advantage is iOS requirement (9.0 vs 14.0). On price and device support there is nothing between them.

Both are free to download. 第二種電気工事士  資格試験対策｜D sells 1 one-off in-app purchase. 永住許可予測 asks for nothing beyond the download.

第二種電気工事士  資格試験対策｜D ships an update every 6 months, 永住許可予測 every 6 days. The most recent releases landed on October 8, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | 第二種電気工事士  資格試験対策｜D | 永住許可予測 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 82.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 6 days** |
| Monetization | Free with in-app purchases | — |
| Size | 26 MB | 13 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Eriya Okuno](https://appshunter.io/developer/1499747901) | [修源 黄](https://appshunter.io/developer/1723189291) |

## What reviewers say

### 第二種電気工事士  資格試験対策｜D

[App page](https://appshunter.io/ios/app/d-learning/id1536908296)

Prepare for the Second Class Electrician qualification exam with practice tests and detailed explanations. Review missed or flagged questions, and practice by difficulty level or subject. Additional question sets are available for purchase.

**Highlights:** Practice tests by difficulty and subject, Review missed and flagged questions, Timed practice sessions, Detailed explanations, Adjustable text size, Progress tracking

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 有料問題 | $3.99 | one-time |


### 永住許可予測

[App page](https://appshunter.io/ios/app/id6744840505)

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

**In-app purchases:** none


## Frequently asked questions

### Is 第二種電気工事士  資格試験対策｜D free?

第二種電気工事士  資格試験対策｜D is free to download, with in-app purchases available.

### Is 永住許可予測 free?

永住許可予測 is free to download, with no in-app purchases.

### Do 第二種電気工事士  資格試験対策｜D or 永住許可予測 have ads?

第二種電気工事士  資格試験対策｜D shows ads; 永住許可予測 does not.

### Which is updated more often, 第二種電気工事士  資格試験対策｜D or 永住許可予測?

第二種電気工事士  資格試験対策｜D ships an update every 6 months, and 永住許可予測 every 6 days. Most recently, 第二種電気工事士  資格試験対策｜D was updated on October 8, 2026 and 永住許可予測 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.*