# Hệ thống Chấm công vs OS PLUS

The clearest difference is update cadence: OS PLUS at fortnightly against Hệ thống Chấm công's every 12 months. Hệ thống Chấm công's advantage is iOS requirement (13.4 vs 16.6). 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.

Hệ thống Chấm công ships an update every 12 months, OS PLUS fortnightly. The most recent releases landed on September 19, 2026 and July 19, 2026 respectively.

## The numbers

| Metric | Hệ thống Chấm công | OS PLUS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Fortnightly** |
| Size | 22 MB | 74 MB |
| Requires iOS | **13.4** | 16.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nguyen Van Hung](https://appshunter.io/developer/1490966346) | [cuong le](https://appshunter.io/developer/1677985116) |

## What reviewers say

### Hệ thống Chấm công

[App page](https://appshunter.io/ios/app/he-thong-cham-cong/id1509640456)

**Features:** macOS Compatibility

**In-app purchases:** none


### OS PLUS

[App page](https://appshunter.io/ios/app/os-plus/id6446452345)

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

**In-app purchases:** none


## Frequently asked questions

### Is Hệ thống Chấm công free?

Hệ thống Chấm công is free to download, with no in-app purchases.

### Is OS PLUS free?

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

### Do Hệ thống Chấm công or OS PLUS have ads?

Neither Hệ thống Chấm công nor OS PLUS shows ads.

### Which is updated more often, Hệ thống Chấm công or OS PLUS?

Hệ thống Chấm công ships an update every 12 months, and OS PLUS fortnightly. Most recently, Hệ thống Chấm công was updated on September 19, 2026 and OS PLUS on July 19, 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.*