# 모두의 자격증 vs 사자산기 필기

The clearest difference is update cadence: 모두의 자격증 at every 8 days against 사자산기 필기's every 5 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 모두의 자격증 sells 1 one-off in-app purchase and 사자산기 필기 sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

모두의 자격증 ships an update every 8 days, 사자산기 필기 every 5 weeks. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 모두의 자격증 | 사자산기 필기 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 8 days** | Every 5 weeks |
| Size | 42 MB | 70 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [woosik choi](https://appshunter.io/developer/1845521022) | [DayLab(KR)](https://appshunter.io/developer/1883683802) |

## What reviewers say

### 모두의 자격증

[App page](https://appshunter.io/ios/app/id6779944719)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 광고 제거 | $2.99 | one-time |


### 사자산기 필기

[App page](https://appshunter.io/ios/app/id6791809802)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 프리미엄 월간 | $1.99 | per month |
| 프리미엄 3개월 | $3.99 | per 3 months |
| 프리미엄 평생 | $5.99 | one-time |


## Frequently asked questions

### Is 모두의 자격증 free?

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

### Is 사자산기 필기 free?

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

### Do 모두의 자격증 or 사자산기 필기 have ads?

Both 모두의 자격증 and 사자산기 필기 show ads.

### Which is updated more often, 모두의 자격증 or 사자산기 필기?

모두의 자격증 ships an update every 8 days, and 사자산기 필기 every 5 weeks. Most recently, 모두의 자격증 was updated on October 31, 2026 and 사자산기 필기 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.*