# 第二種電気工事士  資格試験対策｜D vs Lococo

The clearest difference is update cadence: Lococo at every 6 days against 第二種電気工事士  資格試験対策｜D's every 6 months. 第二種電気工事士  資格試験対策｜D's advantage is device support (3 vs 1) and iOS requirement (9.0 vs 18.2). On price, ads and in-app purchases 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 and Lococo sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

第二種電気工事士  資格試験対策｜D ships an update every 6 months, Lococo every 6 days. Both last shipped on October 8, 2026.

## The numbers

| Metric | 第二種電気工事士  資格試験対策｜D | Lococo |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 82.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 months | **Every 6 days** |
| Monetization | Free with in-app purchases | — |
| Size | 26 MB | 48 MB |
| Requires iOS | **9.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Eriya Okuno](https://appshunter.io/developer/1499747901) | [Teruyuki Suyama](https://appshunter.io/developer/1547824916) |

## 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 |


### Lococo

[App page](https://appshunter.io/ios/app/lococo/id6758325936)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lococo Plus | $2.99 | per month |


## 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 Lococo free?

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

### Do 第二種電気工事士  資格試験対策｜D or Lococo have ads?

Both 第二種電気工事士  資格試験対策｜D and Lococo show ads.

### Which is updated more often, 第二種電気工事士  資格試験対策｜D or Lococo?

第二種電気工事士  資格試験対策｜D ships an update every 6 months, and Lococo 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 Lococo on October 8, 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.*