# World Timezone Calendar vs ClockThis

The clearest difference is ads: ClockThis at none against World Timezone Calendar's shown. ClockThis also leads on update cadence (every 11 days vs every 4 months) and iOS requirement (14.0 vs 16.6). World Timezone Calendar's advantage is ratings volume (295 vs 2). On price, rating, in-app purchases and monetization model there is nothing between them.

Both are free to download. World Timezone Calendar sells 1 one-off in-app purchase and ClockThis sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for World Timezone Calendar against 5.0 for ClockThis. That said, the two scores are not equally well evidenced: World Timezone Calendar has 295 ratings behind it against 2, so its average is the more settled of the two.

World Timezone Calendar ships an update every 4 months, ClockThis every 11 days. The most recent releases landed on September 22, 2026 and June 3, 2026 respectively.

## The numbers

| Metric | World Timezone Calendar | ClockThis |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (295 ratings)](https://appshunter.io/ios/app/world-timezone-calendar/id792552743/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/clockthis/id6453472328/reviews)** |
| Number of ratings | **295** | 2 |
| Positive reviews | 76.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 11 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 19 MB | 66 MB |
| Requires iOS | 16.6 | **14.0** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Geospike Pty Ltd](https://appshunter.io/developer/500622151) | [Meshi Levy](https://appshunter.io/developer/1610496052) |

## What reviewers say

### World Timezone Calendar

[App page](https://appshunter.io/ios/app/world-timezone-calendar/id792552743)

Easily schedule meetings and events across different time zones. This app helps you find the perfect time for global coordination by comparing multiple time zones and integrating with your existing calendar. Plan ahead with future time views and share events that automatically adjust to recipients' local times.

**Highlights:** Cross-timezone scheduling, View calendar in multiple timezones, Time travel to plan ahead, Add unlimited timezones, Day/night indicators, Home screen widget, Global event sharing

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Advertising | $19.95 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🌍 Great for multiple time zones
- 💡 Simple and efficient
- ✅ Clear display
- 🤝 Helpful for international scheduling

**What reviewers complain about**

- 💰 Expensive ad-free version
- 🔞 Inappropriate ads in free version
- 💸 High price for functionality

**Reported bugs**

- 🐛 Inappropriate ads in free version
- 🐛 Widget settings not saved
- 🐛 Cannot add new events with double tap
- 🐛 Timezone abbreviations not displayed
- 🐛 Search feature doesn't work

**Requested features**

- Add more cities
- Option to freeze time zones for comparison
- Switch between 24-hour and AM/PM clock
- Cleaner design with better calendar event integration
- Ability to pick a specific date to view


### ClockThis

[App page](https://appshunter.io/ios/app/clockthis/id6453472328)

Track upcoming movies, TV shows, and sports events with customizable reminders and notifications. Add your favorite events to your home screen for quick access. Never miss an important moment again.

**Highlights:** Discover global events, Create custom events, Set event reminders, Home screen widgets, Personalized notifications, Unlimited event creation

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ClockThis Pro | $1.99 | one-time |
| Clockies (Small) | $1.99 | one-time |
| Clockies (Medium) | $4.99 | one-time |
| Unlimited Slots (1 Month) | $4.99 | one-time |
| Clockies (Big) | $9.99 | one-time |


## Frequently asked questions

### Is World Timezone Calendar free?

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

### Is ClockThis free?

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

### Which has better reviews, World Timezone Calendar or ClockThis?

ClockThis is rated higher. World Timezone Calendar averages 4.9 out of 5 from 295 ratings, while ClockThis averages 5.0 from 2 ratings.

### Do World Timezone Calendar or ClockThis have ads?

World Timezone Calendar shows ads; ClockThis does not.

### Which is updated more often, World Timezone Calendar or ClockThis?

World Timezone Calendar ships an update every 4 months, and ClockThis every 11 days. Most recently, World Timezone Calendar was updated on September 22, 2026 and ClockThis on June 3, 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.*