# World Clock 世界時鐘 vs DuoTime

The clearest difference is price: World Clock 世界時鐘 at Free against DuoTime's $0.99. World Clock 世界時鐘 also leads on iOS requirement (13.0 vs 15.0). DuoTime's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

World Clock 世界時鐘 is free to download; DuoTime costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | World Clock 世界時鐘 | DuoTime |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | — | Weekly |
| Size | 23 MB | 24 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [fung ka wa](https://appshunter.io/developer/6778859454) | [CdPlus](https://appshunter.io/developer/446082621) |

## What reviewers say

### World Clock 世界時鐘

[App page](https://appshunter.io/ios/app/world-clock/id6780769463)

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

**In-app purchases:** none


### DuoTime

[App page](https://appshunter.io/ios/app/duotime-dual-clock/id6798276447)

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

**In-app purchases:** none


## Frequently asked questions

### Is World Clock 世界時鐘 free?

World Clock 世界時鐘 is free to download, with no in-app purchases.

### Is DuoTime free?

DuoTime costs $0.99, with no in-app purchases.

### Do World Clock 世界時鐘 or DuoTime have ads?

World Clock 世界時鐘 shows ads; DuoTime does not.

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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.*