# รู้ทัน vs NCX

The clearest difference is update cadence: รู้ทัน at every 3 months against NCX's every 12 months. รู้ทัน also leads on iOS requirement (11.0 vs 13.0). 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.

รู้ทัน ships an update every 3 months, NCX every 12 months. The most recent releases landed on September 13, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | รู้ทัน | NCX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 12 months |
| Size | 65 MB | 29 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Department of Special Investigation](https://appshunter.io/developer/1145225100) | [InfoQuest Limited](https://appshunter.io/developer/891581313) |

## What reviewers say

### รู้ทัน

[App page](https://appshunter.io/ios/app/rootan/id1546436290)

**Features:** macOS Compatibility

**In-app purchases:** none


### NCX

[App page](https://appshunter.io/ios/app/ncx/id1634527367)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is รู้ทัน free?

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

### Is NCX free?

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

### Do รู้ทัน or NCX have ads?

Neither รู้ทัน nor NCX shows ads.

### Which is updated more often, รู้ทัน or NCX?

รู้ทัน ships an update every 3 months, and NCX every 12 months. Most recently, รู้ทัน was updated on September 13, 2026 and NCX on September 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.*