# CalendarDuo vs UNI Express

The clearest difference is ads: UNI Express at none against CalendarDuo's shown. UNI Express also leads on update cadence (every 6 days vs every 4 months) and monetization model (free vs ad-supported). On price, review sentiment, 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.

CalendarDuo ships an update every 4 months, UNI Express every 6 days. The most recent releases landed on October 15, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | CalendarDuo | UNI Express |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 6 days** |
| Monetization | Ad-supported | **Free** |
| Size | 41 MB | 54 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chun Lam](https://appshunter.io/developer/1565498900) | [KA NAM CHAN](https://appshunter.io/developer/1681748216) |

## What reviewers say

### CalendarDuo

[App page](https://appshunter.io/ios/app/calendarduo/id1589593639)

Easily manage and view holidays from two different countries simultaneously. This utility app offers instant switching between calendars, a dual-view display, and helpful tools like a world clock and currency exchange.

**Highlights:** Switch between two world calendars instantly, Duo-view with holidays from two countries, Daylight Saving Time dates, Currency exchange rate, World clock, Add notes

**Features:** macOS Compatibility

**In-app purchases:** none


### UNI Express

[App page](https://appshunter.io/ios/app/uni-express/id6447557057)

This app offers a one-stop consolidation and express delivery service from mainland China and Hong Kong to the UK. It features a professional shipping team, online customer service, and aims for punctual, safe, and fast delivery.

**Highlights:** Consolidation service, Express delivery, Mainland China to UK shipping, Hong Kong to UK shipping, Online customer service, Professional transport team

**In-app purchases:** none


## Frequently asked questions

### Is CalendarDuo free?

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

### Is UNI Express free?

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

### Do CalendarDuo or UNI Express have ads?

CalendarDuo shows ads; UNI Express does not.

### Which is updated more often, CalendarDuo or UNI Express?

CalendarDuo ships an update every 4 months, and UNI Express every 6 days. Most recently, CalendarDuo was updated on October 15, 2026 and UNI Express on October 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.*