# Khmer Smart Calendar vs OoneWork

The clearest difference is in-app purchases: OoneWork at none against Khmer Smart Calendar's 1. OoneWork also leads on ads (none vs shown) and iOS requirement (15.0 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Khmer Smart Calendar sells 1 one-off in-app purchase. OoneWork asks for nothing beyond the download.

Khmer Smart Calendar ships an update every 2 weeks, OoneWork fortnightly. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Khmer Smart Calendar | OoneWork |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (1.6K ratings)](https://appshunter.io/ios/app/khmer-smart-calendar/id1339660304/reviews)** | — |
| Number of ratings | **1.6K** | — |
| Positive reviews | 38.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 29 MB | 81 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Phearoth Phen](https://appshunter.io/developer/925021535) | [OONE POWER TECHNOLOGY CO., LTD](https://appshunter.io/developer/1561639168) |

## What reviewers say

### Khmer Smart Calendar

[App page](https://appshunter.io/ios/app/khmer-smart-calendar/id1339660304)

This app displays Cambodian holidays, lunar dates, and Seil days alongside solar dates. It offers event reminders, notes, and weather forecasts. Users can customize the interface and back up data to iCloud.

**Highlights:** Lunar and solar date display, Cambodian holiday tracking, Seil day marking, Event reminders and notes, Weather forecasts, Home and Lock Screen widgets, Date calculator

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $8.99 | one-time |

**What reviewers like**

- 👍 User-friendly interface
- 🚀 Ease of use

**What reviewers complain about**

- 🐛 Calculation errors
- 🔧 Compatibility issues
- 🔍 Lack of language options

**Reported bugs**

- App crashes after update
- Incorrect date calculations

**Requested features**

- Correct public holiday dates
- Multilingual support


### OoneWork

[App page](https://appshunter.io/ios/app/oonework/id6758914988)

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

**In-app purchases:** none


## Frequently asked questions

### Is Khmer Smart Calendar free?

Khmer Smart Calendar is free to download, with in-app purchases available.

### Is OoneWork free?

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

### Do Khmer Smart Calendar or OoneWork have ads?

Khmer Smart Calendar shows ads; OoneWork does not.

### Which is updated more often, Khmer Smart Calendar or OoneWork?

Khmer Smart Calendar ships an update every 2 weeks, and OoneWork fortnightly. Most recently, Khmer Smart Calendar was updated on November 6, 2026 and OoneWork on November 5, 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.*