# World Clock vs ZoneSync Pro

The clearest difference is iOS requirement: World Clock at 12.0 against ZoneSync Pro's 15.1. On price, ads, 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.

## The numbers

| Metric | World Clock | ZoneSync Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Size | 27 MB | 45 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [GO DAEHUN](https://appshunter.io/developer/1780930404) | [INVOLUTION CONSULTING PTY LTD](https://appshunter.io/developer/1546377205) |

## What reviewers say

### World Clock

[App page](https://appshunter.io/ios/app/world-clock-time-calculator/id6739600701)

**Features:** macOS Compatibility

**In-app purchases:** none


### ZoneSync Pro

[App page](https://appshunter.io/ios/app/zonesync-pro/id6747392976)

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

**In-app purchases:** none


## Frequently asked questions

### Is World Clock free?

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

### Is ZoneSync Pro free?

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

### Do World Clock or ZoneSync Pro have ads?

Neither World Clock nor ZoneSync Pro shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*