Comparison

World Timezone Calendar vs ClockThis

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

World Timezone Calendar

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
Read full description

Coordinate global meetings, calls, and events without the timezone math. Standard world clocks only tell you what time it is right now. World Calendar goes further: it’s a powerful timezone converter and international meeting planner that lets you look into the future to find the perfect time for everyone. Whether you are scheduling a global team sync, planning an international trip, or calling family overseas, World Calendar integrates directly with your iOS Calendar to make cross-timezone scheduling effortless. CROSS-TIMEZONE SCHEDULING Compare multiple timezones side-by-side to instantly pinpoint the ideal meeting time. Tap anywhere to set a target time, and tap twice to seamlessly create an event directly in your calendar. VIEW YOUR CALENDAR IN MULTIPLE TIMEZONES World Calendar displays your existing events across all your selected timezones. Create, edit, and share events with a single tap, ensuring your global schedule is always perfectly aligned. KEY FEATURES: • Time Travel: Scroll into the future to plan days, weeks, or months ahead. • No Limits: Add and compare as many timezones as you need. • Day/Night Indicators: Instantly see if your contact is awake or asleep. • Home Screen Widget: Check your favorite timezones at a glance without unlocking your device. • Watch Widget and App: Put your recently selected timezones on your wrist • Easy Search: Find locations by city name, timezone abbreviation (e.g., EST, GMT), or UTC offset. • Global Sharing: Send event invites to other users that automatically adapt to their local timezone. • DST Accuracy: Fully automatic adjustments for daylight saving time changes globally. • Nautical Time Zones: Full support for standard UTC offsets without DST adjustments. • Landscape View: Turn your device for a wider, comprehensive timeline view.

About

ClockThis

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
Read full description

Never miss out on your exciting moments ever again! It's similar to a calendar, except it's dedicated to the purpose of showing you only the events you look forward to! We've built this app around the idea of fun & excitement: Experience the anticipation of your upcoming events every time you launch the app! Features: 1) Discover Events (-) Discover exciting events taking place world-wide of varying categories: Upcoming Movies & TV Shows, Sport Events & Much More! (-) Assign priority: Don't want to miss the premiere of your favorite TV Show? Assign a high priority to it and our app will send you notifications so you don't miss out! 2) Create Events (-) Basic details: Title, description, date (-) Customize: Give your event some life with custom color, emoji tag, or even upload your own photo as a background image (-) Extra Reminders: Set additional reminders (1 day, 1 week prior) to receive notifications to your device so you never miss out! (-) Unlimited: Create as many events as you want 3) Widget (-) Add your favorite events to your home screen so you can keep track of important events without having to launch the app 4) Notifications (-) Our app's main purpose is to send you notifications for your most important events. Choose which events will prompt notifications, and to what extent. (-) You're in control: The only notifications you receive are the ones you chose to be shown.

Screenshots

World Timezone Calendar4 screens
ClockThis4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
World Timezone Calendar versus ClockThis: the parameters behind the verdict, then further details
ParameterWorld Timezone CalendarClockThis
PriceFreeFree
Rating4.9 (295 ratings)5.0 (2 ratings) — better
Positive reviews76.0% of reviews—
Number of ratings295 — better2
Update frequencyEvery 4 monthsEvery 11 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone, iPad, iPod
Requires iOS16.614.0 — better
Further details — not scored
Size19 MB66 MB
Age rating4+4+
DeveloperGeospike Pty LtdMeshi Levy

Customer experience

World Timezone Calendar

All ratings295 ratings
Positive98.6%
Neutral0.7%
Negative0.7%
Written reviews50 reviews
Positive76.0%
Neutral10.0%
Negative14.0%

ClockThis

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

World Timezone Calendar

Reported bugs

7 issues
  • 🐛 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
Show 2 more
  • 🐛 Crashes when adding a city
  • 🐛 Widget expansion settings not saved

Requested features

5 requests
  • 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

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

World Timezone Calendar

One-time1
  • Remove Advertising$19.95
5 purchases

ClockThis

One-time5
  • ClockThis Pro$1.99
  • Clockies (Small)$1.99
  • Clockies (Medium)$4.99
Show 2 more
  • Unlimited Slots (1 Month)$4.99
  • Clockies (Big)$9.99

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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