# Atomic Clock App vs World Clock

The clearest difference is price: World Clock at Free against Atomic Clock App's $2.99. Atomic Clock App's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

World Clock is free to download; Atomic Clock App costs $2.99 up front. World Clock sells 1 one-off in-app purchase. Atomic Clock App asks for nothing beyond the download.

## The numbers

| Metric | Atomic Clock App | World Clock |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 5 weeks |
| Size | 31 MB | 41 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gianfranco Antenucci](https://appshunter.io/developer/1875606849) | [Tomash Sugint](https://appshunter.io/developer/1896504334) |

## What reviewers say

### Atomic Clock App

[App page](https://appshunter.io/ios/app/atomic-clock-app/id6760158311)

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

**In-app purchases:** none


### World Clock

[App page](https://appshunter.io/ios/app/world-clock-timeshift/id6768507524)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TimeShift Pro | $3.99 | one-time |


## Frequently asked questions

### Is Atomic Clock App free?

Atomic Clock App costs $2.99, with no in-app purchases.

### Is World Clock free?

World Clock is free to download, with in-app purchases available.

### Do Atomic Clock App or World Clock have ads?

Neither Atomic Clock App nor World Clock shows ads.

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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.*