# OneCST vs KHONSNN

The clearest difference is iOS requirement: KHONSNN at 13.0 against OneCST's 15.1. 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.

## The numbers

| Metric | OneCST | KHONSNN |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 days | — |
| Size | 54 MB | 10 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MobiFone](https://appshunter.io/developer/437730616) | [The Ministry Of Finance Of Viet Nam](https://appshunter.io/developer/1600262108) |

## What reviewers say

### OneCST

[App page](https://appshunter.io/ios/app/onecst/id6451189988)

**Features:** macOS Compatibility

**In-app purchases:** none


### KHONSNN

[App page](https://appshunter.io/ios/app/khonsnn/id6456794168)

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

**In-app purchases:** none


## Frequently asked questions

### Is OneCST free?

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

### Is KHONSNN free?

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

### Do OneCST or KHONSNN have ads?

Neither OneCST nor KHONSNN shows ads.

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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.*