# 전기기사 vs 똑패스 Pro

The clearest difference is in-app purchases: 똑패스 Pro at none against 전기기사's 1. 똑패스 Pro also leads on ads (none vs shown). 전기기사's advantage is iOS requirement (12.0 vs 14.0). On price, update cadence and device support there is nothing between them.

Both are free to download. 전기기사 sells 1 one-off in-app purchase. 똑패스 Pro asks for nothing beyond the download.

전기기사 ships an update every 4 months, 똑패스 Pro every 2 months. The most recent releases landed on September 9, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | 전기기사 | 똑패스 Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 296 MB | 390 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jongmin Kim](https://appshunter.io/developer/1693759760) | [WON JOON Noh](https://appshunter.io/developer/1885172830) |

## What reviewers say

### 전기기사

[App page](https://appshunter.io/ios/app/id6742209289)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 광고 제거 | $4.99 | one-time |


### 똑패스 Pro

[App page](https://appshunter.io/ios/app/pro/id6782593811)

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

**In-app purchases:** none


## Frequently asked questions

### Is 전기기사 free?

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

### Is 똑패스 Pro free?

똑패스 Pro is free to download, with no in-app purchases.

### Do 전기기사 or 똑패스 Pro have ads?

전기기사 shows ads; 똑패스 Pro does not.

### Which is updated more often, 전기기사 or 똑패스 Pro?

전기기사 ships an update every 4 months, and 똑패스 Pro every 2 months. Most recently, 전기기사 was updated on September 9, 2026 and 똑패스 Pro on September 17, 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.*