# 서흥이앤팩 vs KTT 자가보안

The clearest difference is iOS requirement: KTT 자가보안 at 11.0 against 서흥이앤팩's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

서흥이앤팩 ships an update every 11 months, KTT 자가보안 every 9 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | 서흥이앤팩 | KTT 자가보안 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 9 months** |
| Size | 21 MB | 44 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lee Jooeun](https://appshunter.io/developer/1423524440) | [MGV Security System](https://appshunter.io/developer/1442050029) |

## What reviewers say

### 서흥이앤팩

[App page](https://appshunter.io/ios/app/id1423524441)

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

**In-app purchases:** none


### KTT 자가보안

[App page](https://appshunter.io/ios/app/ktt/id6473464936)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 서흥이앤팩 free?

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

### Is KTT 자가보안 free?

KTT 자가보안 is free to download, with no in-app purchases.

### Do 서흥이앤팩 or KTT 자가보안 have ads?

Neither 서흥이앤팩 nor KTT 자가보안 shows ads.

### Which is updated more often, 서흥이앤팩 or KTT 자가보안?

서흥이앤팩 ships an update every 11 months, and KTT 자가보안 every 9 months. Most recently, 서흥이앤팩 was updated on November 2, 2026 and KTT 자가보안 on November 4, 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.*