# World Clock vs Overlap

The clearest difference is ads: Overlap at none against World Clock's shown. Overlap also leads on monetization model (free vs ad-supported). World Clock's advantage is review sentiment (87% vs 67%) and update cadence (monthly vs every 3 months). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.8 for World Clock against 4.8 for Overlap. Both are backed by a comparable volume of ratings — 600 and 875 respectively. Written reviews are what separate them: 87% of World Clock's written reviews are positive against 67% of Overlap's.

World Clock ships an update monthly, Overlap every 3 months. Both last shipped on October 29, 2026.

## The numbers

| Metric | World Clock | Overlap |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (600 ratings)](https://appshunter.io/ios/app/world-clock-timezone-converter/id1425332311/reviews) | **[4.8 (875 ratings)](https://appshunter.io/ios/app/overlap-world-clock/id1516950324/reviews)** |
| Number of ratings | 600 | **875** |
| Positive reviews | **86.7% of reviews** | 67.3% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Ad-supported | **Free** |
| Size | 34 MB | 71 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Bokeria](https://appshunter.io/developer/1425332310) | [Bonobo](https://appshunter.io/developer/666155611) |

## What reviewers say

### World Clock

[App page](https://appshunter.io/ios/app/world-clock-timezone-converter/id1425332311)

Easily compare world times and convert dates and times across different cities and time zones. Ideal for international meetings, travel, or staying connected with loved ones abroad. Offers widgets for quick access and customizable themes.

**Highlights:** Compare multiple cities and time zones, Convert dates and times across regions, Check UTC and standard time zones, Add widgets for fast world time checks, See day and night indicators, Choose 12-hour or 24-hour format, Select from multiple theme colors

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and intuitive user interface
- 🆓 Free application with no paywall
- 🌍 Comprehensive timezone and city database
- ⚡ Fast app performance and quick load times
- 🔄 Automatic daylight saving time updates

**What reviewers complain about**

- 🐛 Widget displays incorrect or blank times
- 🐛 Time display stuck or frozen
- ⚠️ Daylight saving time handling issues
- 🐛 Night mode compatibility problems
- 🐛 Screen flickering when scrolling

**Reported bugs**

- Widget showing blank screen instead of times
- Widget time display stuck or frozen
- Incorrect time display after daylight saving changes
- Widget not working on night mode
- Screen flickering when scrolling

**Requested features**

- Alarm functionality for multiple timezones
- Larger widget size options (2x2, 3x3)
- Widget theme/color customization
- Seconds display in time
- Real-time minute updates


### Overlap

[App page](https://appshunter.io/ios/app/overlap-world-clock/id1516950324)

Easily find optimal meeting times across different time zones with a visual graph. Set custom availability for each location and sync with your calendar to avoid scheduling conflicts. Share convenient times directly from the app.

**Highlights:** Visual Overlap Graph for meeting times, Customizable availability hours per time zone, Calendar event integration, Multiple time zone display, Time zone renaming, Lock Screen Standby Mode widget

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 💡 Elegant and intuitive interface
- 🚀 Helpful for coordinating meetings across time zones
- 👍 Useful for tracking time differences globally
- 👍 Simple and easy to use
- 👍 Beautiful and sleek design

**What reviewers complain about**

- 🐛 Widget not working
- 🐛 Timezone data not always accurate
- 🐛 Duplicate timezone entries
- 🐛 App crashes and freezes
- 🔋 High CPU usage on Mac

**Reported bugs**

- Timezone data not updating correctly
- Inability to delete unwanted timezones
- Inconsistent behavior across platforms
- Typing issues on Mac version

**Requested features**

- Add option to reorder timezones
- Implement 24-hour clock display
- Allow customization of colors and backgrounds
- Integrate with calendar for scheduling
- Add weather information for each timezone


## Frequently asked questions

### Is World Clock free?

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

### Is Overlap free?

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

### Which has better reviews, World Clock or Overlap?

Overlap is rated higher. World Clock averages 4.8 out of 5 from 600 ratings, while Overlap averages 4.8 from 875 ratings.

### Do World Clock or Overlap have ads?

World Clock shows ads; Overlap does not.

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

World Clock ships an update monthly, and Overlap every 3 months. Most recently, World Clock was updated on October 29, 2026 and Overlap on October 29, 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.*