# Việt MOS vs MAK

The clearest difference is in-app purchases: Việt MOS at none against MAK's 3. On price, update cadence and iOS requirement there is nothing between them.

Both are free to download. MAK sells 3 in-app purchases, starting at $4.99 per month. Việt MOS asks for nothing beyond the download.

Việt MOS ships an update every 8 months, MAK every 5 months. Both last shipped on September 13, 2026.

## The numbers

| Metric | Việt MOS | MAK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | Every 8 months | **Every 5 months** |
| Size | 84 MB | 50 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | — | **iPhone** |
| Age rating | 17+ | 4+ |
| Developer | [Tho Trong Nguyen](https://appshunter.io/developer/1093690555) | [META ARBITRATION KING COMPANY LIMITED](https://appshunter.io/developer/1791039428) |

## What reviewers say

### Việt MOS

[App page](https://appshunter.io/ios/app/viet-mos/id6503328201)

**In-app purchases:** none


### MAK

[App page](https://appshunter.io/ios/app/mak/id6736626501)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Meta Arbitration King Premium | $4.99 | per month |
| Meta Arbitration King Premium | $24.99 | per 6 months |
| Meta Arbitration King Premium | $39.99 | per year |


## Frequently asked questions

### Is Việt MOS free?

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

### Is MAK free?

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

### Which is updated more often, Việt MOS or MAK?

Việt MOS ships an update every 8 months, and MAK every 5 months. Most recently, Việt MOS was updated on September 13, 2026 and MAK on September 13, 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.*