# A Chấm Công vs LED Organ

The clearest difference is review sentiment: A Chấm Công at 40% against LED Organ's 0%. 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.

A Chấm Công ships an update monthly, LED Organ every 2 months. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | A Chấm Công | LED Organ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/led-organ/id6444875266/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | **40.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | Free |
| Size | 70 MB | 50 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [VanHoa Tran](https://appshunter.io/developer/1531549568) | [Duc Tai Truong](https://appshunter.io/developer/1117238418) |

## What reviewers say

### A Chấm Công

[App page](https://appshunter.io/ios/app/a-cham-cong/id1532369664)

This app offers automated timekeeping using AI facial recognition technology. It allows users to check in/out, manage leave requests, track workdays, and view detailed attendance reports. It's designed for efficient HR management on iOS devices.

**Highlights:** AI facial recognition timekeeping, Daily check-in/check-out, Leave request submission and approval, Workday and leave balance management, Attendance report generation, Report filtering and history tracking

**Features:** Vision Pro support

**In-app purchases:** none


### LED Organ

[App page](https://appshunter.io/ios/app/led-organ/id6444875266)

This application aids piano practice by displaying which keys to press using a connected light system. It synchronizes with MIDI piano files to guide users through left and right-hand parts.

**Highlights:** MIDI piano file support, Left and right-hand guidance, Bluetooth-connected LED light system, Real-time key illumination, Piano practice aid

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is A Chấm Công free?

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

### Is LED Organ free?

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

### Do A Chấm Công or LED Organ have ads?

Neither A Chấm Công nor LED Organ shows ads.

### Which is updated more often, A Chấm Công or LED Organ?

A Chấm Công ships an update monthly, and LED Organ every 2 months. Most recently, A Chấm Công was updated on October 19, 2026 and LED Organ on October 24, 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.*