# World Clock vs RRTool

The clearest difference is price: RRTool at Free against World Clock's $2.99. RRTool also leads on update cadence (every 4 months vs every 21 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

RRTool 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, RRTool every 4 months. The most recent releases landed on September 17, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | World Clock | RRTool |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 4 months** |
| Monetization | Paid | — |
| Size | 11 MB | 5 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) | [Bay Area Instruments Inc.](https://appshunter.io/developer/1649065401) |

## 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


### RRTool

[App page](https://appshunter.io/ios/app/rrtool/id6443753484)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is World Clock free?

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

### Is RRTool free?

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

### Do World Clock or RRTool have ads?

Neither World Clock nor RRTool shows ads.

### Which is updated more often, World Clock or RRTool?

World Clock ships an update every 21 months, and RRTool every 4 months. Most recently, World Clock was updated on September 17, 2026 and RRTool on September 16, 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.*