# 전기공사 vs CAS Catalog

The clearest difference is in-app purchases: CAS Catalog at none against 전기공사's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 전기공사 sells 2 in-app purchases, starting at $9.99 per month. CAS Catalog asks for nothing beyond the download.

전기공사 ships an update weekly, CAS Catalog fortnightly. The most recent releases landed on October 9, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | 전기공사 | CAS Catalog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Size | 110 MB | 10 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hae Seong Kang](https://appshunter.io/developer/1711528778) | [CASHealth](https://appshunter.io/developer/976488437) |

## What reviewers say

### 전기공사

[App page](https://appshunter.io/ios/app/id6469094425)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 정기결제 | $9.99 | per month |
| 한달결제 | $7.99 | one-time |


### CAS Catalog

[App page](https://appshunter.io/ios/app/cas-catalog/id6756562788)

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

**In-app purchases:** none


## Frequently asked questions

### Is 전기공사 free?

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

### Is CAS Catalog free?

CAS Catalog is free to download, with no in-app purchases.

### Do 전기공사 or CAS Catalog have ads?

Neither 전기공사 nor CAS Catalog shows ads.

### Which is updated more often, 전기공사 or CAS Catalog?

전기공사 ships an update weekly, and CAS Catalog fortnightly. Most recently, 전기공사 was updated on October 9, 2026 and CAS Catalog 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.*