Comparison

World Timezone Calendar vs Timezone Assistant

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

Timezone Assistant

Easily convert times across multiple cities and timezones. Select a date and time to see conversions, or find optimal meeting times for global teams. Supports over 7,000 cities and includes Daylight Saving Time adjustments.

Highlights
  • Time conversions for multiple cities
  • Meeting time planner
  • 7,000+ cities and timezones
  • Daylight Saving Time support
  • Customizable timezone list
  • Mark home timezone
Features
Read full description

Timezone assistant will help you with timezone conversions across multiple cities/timezones. · Convert time by selecting date and time needed · Pick meeting times across multiple cities and timezones · 7,000+ cities and time zones · Reorder and sort the list of timezones/cities · Daylight saving (DST) support · Mark a time zone home to easily navigate

Screenshots

World Timezone Calendar4 screens
Timezone Assistant4 screens

Verdict

The call

The clearest difference is rating: World Timezone Calendar at 4.9 against Timezone Assistant's 1.0. World Timezone Calendar also leads on ratings volume (309 vs 1) and device support (4 vs 2). Timezone Assistant's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price 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. Timezone Assistant asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

World Timezone Calendar holds the better App Store score, 4.9 against 1.0. That said, the two scores are not equally well evidenced: World Timezone Calendar has 309 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 76% of World Timezone Calendar's written reviews are positive against 100% of Timezone Assistant's, so the app with the better star average is not the one people write more warmly about.

Scorecard8 real differences · 2 level
World Timezone Calendar versus Timezone Assistant: the parameters behind the verdict, then further details
ParameterWorld Timezone CalendarTimezone Assistant
PriceFreeFree
Rating4.9 (309 ratings) — better1.0 (1 ratings)
Positive reviews76.0% of reviews100.0% of reviews — better
Number of ratings309 — better1
Update frequencyEvery 4 months—
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone, iPod
Requires iOS16.613.0 — better
Further details — not scored
Size19 MB7 MB
Age rating4+4+
DeveloperGeospike Pty LtdScalable Ventures, LLC

Customer experience

World Timezone Calendar

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

Timezone Assistant

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
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

Timezone Assistant

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

World Timezone Calendar

One-time1
  • Remove Advertising$19.95
None

Timezone Assistant

No in-app purchases

Questions

Is World Timezone Calendar free?
World Timezone Calendar is free to download, with in-app purchases available.
Is Timezone Assistant free?
Timezone Assistant is free to download, with no in-app purchases.
Which has better reviews, World Timezone Calendar or Timezone Assistant?
World Timezone Calendar is rated higher. World Timezone Calendar averages 4.9 out of 5 from 309 ratings, while Timezone Assistant averages 1.0 from 1 ratings.
Do World Timezone Calendar or Timezone Assistant have ads?
World Timezone Calendar shows ads; Timezone Assistant does not.

Other comparisons