# 4대보험계산기 vs 두두키

The clearest difference is in-app purchases: 4대보험계산기 at none against 두두키's 6. 4대보험계산기 also leads on iOS requirement (13.0 vs 16.0). 두두키's advantage is ads (none vs shown) and update cadence (every 5 days vs every 3 months). On price, review sentiment and device support there is nothing between them.

Both are free to download. 두두키 sells 6 in-app purchases, starting at $6.99 per month. 4대보험계산기 asks for nothing beyond the download.

4대보험계산기 ships an update every 3 months, 두두키 every 5 days. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 4대보험계산기 | 두두키 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **100.0% of reviews** | 92.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 38 MB | 148 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Seulki Eom](https://appshunter.io/developer/1718927408) | [(주)크랙더데이](https://appshunter.io/developer/1724305003) |

## What reviewers say

### 4대보험계산기

[App page](https://appshunter.io/ios/app/4-4/id6502225480)

Easily calculate mandatory social insurance premiums for both employees and employers. Input basic salary information to quickly determine contributions for national pension, health insurance, long-term care insurance, and employment insurance.

**Highlights:** Employee social insurance calculation, Employer social insurance calculation, National pension calculation, Health insurance calculation, Long-term care insurance calculation, Employment insurance calculation, Industrial accident insurance calculation

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

**In-app purchases:** none


### 두두키

[App page](https://appshunter.io/ios/app/id6504746027)

This app simplifies store management for owners by consolidating attendance tracking, payroll, contract creation, and payslip issuance into one platform. It automates complex calculations for overtime, holiday pay, and weekly pay, reducing labor costs and administrative burdens.

**Highlights:** One-touch attendance tracking, Automatic real-time payroll calculation, Automated weekly pay calculation, Electronic labor contract creation, Schedule management with timeline view, AI assistant for labor cost prediction, Kiosk mode for attendance recording

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 친구초대 라이트 요금제 | $6.99 | per month |
| 라이트 요금제 | $6.99 | per month |
| 라이트 플러스 요금제 | $14.99 | per month |
| 스탠다드 요금제 - 첫달 무료 | $22.99 | per month |
| 스탠다드 요금제 | $24.99 | per month |
| 프로 요금제 | $49.99 | per month |


## Frequently asked questions

### Is 4대보험계산기 free?

4대보험계산기 is free to download, with no in-app purchases.

### Is 두두키 free?

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

### Do 4대보험계산기 or 두두키 have ads?

4대보험계산기 shows ads; 두두키 does not.

### Which is updated more often, 4대보험계산기 or 두두키?

4대보험계산기 ships an update every 3 months, and 두두키 every 5 days. Most recently, 4대보험계산기 was updated on October 24, 2026 and 두두키 on October 27, 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.*