# Sổ Chấm Công vs Hệ thống Chấm công

The clearest difference is iOS requirement: Sổ Chấm Công at 10.0 against Hệ thống Chấm công's 13.4. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Sổ Chấm Công ships an update every 10 months, Hệ thống Chấm công every 12 months. The most recent releases landed on September 8, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Sổ Chấm Công | Hệ thống Chấm công |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 months** | Every 12 months |
| Size | 79 MB | 22 MB |
| Requires iOS | **10.0** | 13.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NGUYEN VAN LUAN](https://appshunter.io/developer/1360557024) | [Nguyen Van Hung](https://appshunter.io/developer/1490966346) |

## What reviewers say

### Sổ Chấm Công

[App page](https://appshunter.io/ios/app/so-cham-cong/id1451454911)

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

**In-app purchases:** none


### Hệ thống Chấm công

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sổ Chấm Công free?

Sổ Chấm Công is free to download, with no in-app purchases.

### Is Hệ thống Chấm công free?

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

### Do Sổ Chấm Công or Hệ thống Chấm công have ads?

Neither Sổ Chấm Công nor Hệ thống Chấm công shows ads.

### Which is updated more often, Sổ Chấm Công or Hệ thống Chấm công?

Sổ Chấm Công ships an update every 10 months, and Hệ thống Chấm công every 12 months. Most recently, Sổ Chấm Công was updated on September 8, 2026 and Hệ thống Chấm công on September 19, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*