# Overlap vs World Time Clock Master

The clearest difference is in-app purchases: Overlap at none against World Time Clock Master's 13. Overlap also leads on rating (4.8 vs 4.6) and iOS requirement (15.0 vs 17.0). World Time Clock Master's advantage is update cadence (fortnightly vs every 3 months). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. World Time Clock Master sells 10 in-app purchases, starting at $2.99 per month. Overlap asks for nothing beyond the download.

Overlap holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 849 and 816 respectively. Written reviews point the same way: 67% of Overlap's written reviews are positive against 66% of World Time Clock Master's.

Overlap ships an update every 3 months, World Time Clock Master fortnightly. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Overlap | World Time Clock Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (849 ratings)](https://appshunter.io/ios/app/overlap-world-clock/id1516950324/reviews)** | [4.6 (816 ratings)](https://appshunter.io/ios/app/world-time-clock-master/id6448859727/reviews) |
| Number of ratings | **849** | 816 |
| Positive reviews | **67.2% of reviews** | 65.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | **Free** | Subscription |
| Size | 71 MB | 236 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, Vision Pro |
| Age rating | 4+ | 4+ |
| Developer | [Bonobo](https://appshunter.io/developer/666155611) | [Alex Komarov Inc.](https://appshunter.io/developer/364741805) |

## What reviewers say

### 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


### World Time Clock Master

[App page](https://appshunter.io/ios/app/world-time-clock-master/id6448859727)

Effortlessly manage multiple time zones with this app. Convert times instantly, schedule events, and view global clocks at a glance with interactive widgets. Features atomic accuracy and a vast database of locations.

**Highlights:** Multiple time zone display, Interactive time conversion, Event scheduling, Atomic time accuracy, Dynamic home screen widgets, List mode for text view, Real moon phases and sunrise/sunset

**Features:** Family Sharing

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month | $2.99 | per month |
| 3 months | $3.99 | per 3 months |
| 1 year | $11.99 | per year |
| 1 year | $11.99 | per year |
| 1 year | $11.99 | per year |
| 1 year | $19.99 | per year |
| Lifetime | $29.99 | one-time |
| Lifetime | $49.99 | one-time |
| Lifetime | $79.99 | one-time |
| Lifetime | $99.99 | one-time |

**What reviewers like**

- 🚀 Delightful scheduling assistance
- 👍 Feature improvement
- 👍 The best Timezone helper
- 👍 One of the best clocks around
- 👍 The Widget is so damn cool!

**What reviewers complain about**

- 🐛 Problemas al actualizar
- 🐛 Sticky signup interface
- 🐛 Demo not enough
- 🔒 NOT A FREE APP
- 💰 Terrible monetisation model compared to previous app

**Reported bugs**

- Lose all the registered locations after updating the app
- Sticky signup interface
- Widget doesn't work
- GMT and London currently have a 1 hour time difference between the two locations, but the app shows them the same time

**Requested features**

- Add the time difference in hours between the default location and other locations in both the widget and the app
- See my calendar events on the dial
- Make a paid tier that doesn't collect my data
- Add new event to a Calendar


## Frequently asked questions

### Is Overlap free?

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

### Is World Time Clock Master free?

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

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

Overlap is rated higher. Overlap averages 4.8 out of 5 from 849 ratings, while World Time Clock Master averages 4.6 from 816 ratings.

### Do Overlap or World Time Clock Master have ads?

Neither Overlap nor World Time Clock Master shows ads.

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

Overlap ships an update every 3 months, and World Time Clock Master fortnightly. Most recently, Overlap was updated on September 24, 2026 and World Time Clock Master on September 25, 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.*