# KTT 자가보안 vs Must

The clearest difference is update cadence: Must at every 2 months against KTT 자가보안's every 9 months. On price, ads, in-app purchases and device support there is nothing between them.

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

KTT 자가보안 ships an update every 9 months, Must every 2 months. The most recent releases landed on October 3, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | KTT 자가보안 | Must |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/must/id6479213927/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 90.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 44 MB | 52 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MGV Security System](https://appshunter.io/developer/1442050029) | [Jichan Hwang](https://appshunter.io/developer/1735193590) |

## What reviewers say

### KTT 자가보안

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Must

[App page](https://appshunter.io/ios/app/must/id6479213927)

Manage all your schedules quickly and easily with this intuitive app. It offers convenient schedule notifications, a dark theme option, and a task monitor to keep track of your to-dos. Organize your tasks systematically using the Eisenhower Matrix and color-coded tags.

**Highlights:** Eisenhower Matrix for systematic task management, Convenient schedule notifications, Home screen widgets for quick access, Customizable color tags for event classification, Task monitor with filtering options, Dark theme support

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

**In-app purchases:** none


## Frequently asked questions

### Is KTT 자가보안 free?

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

### Is Must free?

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

### Do KTT 자가보안 or Must have ads?

Neither KTT 자가보안 nor Must shows ads.

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

KTT 자가보안 ships an update every 9 months, and Must every 2 months. Most recently, KTT 자가보안 was updated on October 3, 2026 and Must on October 10, 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.*