# World Clock vs 3DM Viewer

The clearest difference is price: 3DM Viewer at Free against World Clock's $2.99. 3DM Viewer also leads on update cadence (every 8 months vs every 21 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

3DM Viewer is free to download; World Clock costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

World Clock ships an update every 21 months, 3DM Viewer every 8 months. The most recent releases landed on November 2, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | World Clock | 3DM Viewer |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 8 months** |
| Monetization | Paid | — |
| Size | 11 MB | 38 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [俊 姜](https://appshunter.io/developer/974809005) | [锡敏 石](https://appshunter.io/developer/1015833793) |

## What reviewers say

### World Clock

[App page](https://appshunter.io/ios/app/world-clock-time-zone-wheel/id1213420284)

Visualize global time zones with a 3D Earth and Moon. This app displays local times for over 460 cities and offers a 3D/2D map view. It supports numerous system languages and provides detailed country and region information.

**Highlights:** 3D Earth and Moon visualization, Solar Clock feature, Over 460 cities' local time, 3D/2D Time Zone Map, Support for numerous system languages, Extensive country and region listing

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

**In-app purchases:** none


### 3DM Viewer

[App page](https://appshunter.io/ios/app/3dm-viewer/id6730112624)

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

**In-app purchases:** none


## Frequently asked questions

### Is World Clock free?

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

### Is 3DM Viewer free?

3DM Viewer is free to download, with no in-app purchases.

### Do World Clock or 3DM Viewer have ads?

Neither World Clock nor 3DM Viewer shows ads.

### Which is updated more often, World Clock or 3DM Viewer?

World Clock ships an update every 21 months, and 3DM Viewer every 8 months. Most recently, World Clock was updated on November 2, 2026 and 3DM Viewer on October 27, 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.*