# GDT Calendar vs K Calendar

The clearest difference is rating: K Calendar at 5.0 against GDT Calendar's 4.3. GDT Calendar's advantage is ratings volume (10 vs 2) and iOS requirement (10.0 vs 12.1). 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.

K Calendar holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: GDT Calendar has 10 ratings behind it against 2, so its average is the more settled of the two.

GDT Calendar ships an update every 5 months, K Calendar every 6 months. The most recent releases landed on October 18, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | GDT Calendar | K Calendar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (10 ratings)](https://appshunter.io/ios/app/gdt-calendar/id926656830/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/k-calendar/id1486057424/reviews)** |
| Number of ratings | **10** | 2 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 6 months |
| Monetization | Free | Free |
| Size | 15 MB | 70 MB |
| Requires iOS | **10.0** | 12.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [General Department of Taxation](https://appshunter.io/developer/923910706) | [IntechDev Co., Ltd.](https://appshunter.io/developer/1691851342) |

## What reviewers say

### GDT Calendar

[App page](https://appshunter.io/ios/app/gdt-calendar/id926656830)

This app provides a comprehensive guide to Cambodia's tax return deadlines and public holidays. It details the start and end dates for various tax types, offering timely alerts for self-assessment taxpayers. Stay informed about important dates for patent tax, VAT, and more.

**Highlights:** Tax return start and deadline notifications, Alerts for self-assessment system, Covers various tax types (Patent, VAT, Profit, etc.), Includes Cambodia public holidays, Lists Buddhist days, Information on Property Tax and Withholding Tax

**Features:** macOS Compatibility

**In-app purchases:** none


### K Calendar

[App page](https://appshunter.io/ios/app/k-calendar/id1486057424)

Easily convert between international and Khmer lunar dates. Access Cambodian national holidays and religious events with notifications. The app is fully designed in the Khmer language.

**Highlights:** International date conversion, Khmer lunar date conversion, Cambodian national holidays, Religious event information, Holiday and event notifications, Calendar widget

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GDT Calendar free?

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

### Is K Calendar free?

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

### Which has better reviews, GDT Calendar or K Calendar?

K Calendar is rated higher. GDT Calendar averages 4.3 out of 5 from 10 ratings, while K Calendar averages 5.0 from 2 ratings.

### Do GDT Calendar or K Calendar have ads?

Neither GDT Calendar nor K Calendar shows ads.

### Which is updated more often, GDT Calendar or K Calendar?

GDT Calendar ships an update every 5 months, and K Calendar every 6 months. Most recently, GDT Calendar was updated on October 18, 2026 and K Calendar on October 20, 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.*