Comparison

World Cal vs Time Zone Converter・Convertime

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

Head to head
About

World Cal

Easily schedule global meetings and events across different time zones. This app helps you find the perfect time for international calls and trips by comparing multiple time zones and integrating with your calendar.

Highlights
  • Cross-timezone scheduling
  • View calendar in multiple timezones
  • Time travel into the future
  • Add unlimited timezones
  • Day/night indicators
  • Home screen and watch widgets
  • DST accuracy
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

Time Zone Converter・Convertime

Easily find the current time and plan meetings across different time zones. This tool helps you avoid mental calculations by visually aligning schedules and identifying overlapping hours for seamless coordination.

Highlights
  • Multiple time zone display
  • Meeting planner
  • Visual time scale
  • AM/PM or 24-hour format
  • GMT code display
  • Meeting time export
Features
Read full description

Find the exact time & schedule meetings across multiple time zones easily with Convertime. Don't strain your brain by calculating it in your mind. Just swipe the time scale to the left and find the best time for different locations or use Meeting Planner feature to coordinate meetings. Use Convertime for planning meetings, catching up with family or friends, traveling, and many other things. Feel free to: * Add as many locations as you want * Rename locations for your needs * Use AM/PM or 24-hour time format * See the time difference and GMT code of each location * Set the exact date and time for the best match * Coordinate meetings across multiple time zones by visually aligning hours * Instantly see overlapping hours * Copy or export meeting time

Screenshots

World Cal4 screens
Time Zone Converter・Convertime4 screens

Verdict

The call

The clearest difference is in-app purchases: Time Zone Converter・Convertime at none against World Cal's 1. Time Zone Converter・Convertime also leads on ads (none vs shown) and review sentiment (100% vs 76%). World Cal's advantage is ratings volume (315 vs 4) and device support (4 vs 1). On price, rating and iOS requirement 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 Cal sells 1 one-off in-app purchase. Time Zone Converter・Convertime asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for World Cal against 5.0 for Time Zone Converter・Convertime. That said, the two scores are not equally well evidenced: World Cal has 315 ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 76% of World Cal's written reviews are positive against 100% of Time Zone Converter・Convertime's.

UpkeepUpdate frequency

World Cal ships an update every 4 months, Time Zone Converter・Convertime every 2 months. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

Scorecard7 real differences · 3 level
World Cal versus Time Zone Converter・Convertime: the parameters behind the verdict, then further details
ParameterWorld CalTime Zone Converter・Convertime
PriceFreeFree
Rating4.9 (315 ratings)5.0 (4 ratings) — better
Positive reviews76.5% of reviews100.0% of reviews — better
Number of ratings315 — better4
Update frequencyEvery 4 monthsEvery 2 months — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone
Requires iOS16.616.0 — better
Further details — not scored
Size21 MB9 MB
Age rating4+4+
DeveloperGeospike Pty LtdSiarhei Serdziukou

Customer experience

World Cal

All ratings315 ratings
Positive98.7%
Neutral0.6%
Negative0.6%
Written reviews51 reviews
Positive76.5%
Neutral9.8%
Negative13.7%

Time Zone Converter・Convertime

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

World Cal

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

Time Zone Converter・Convertime

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

World Cal

One-time1
  • Remove Advertising$19.95
None

Time Zone Converter・Convertime

No in-app purchases

Questions

Is World Cal free?
World Cal is free to download, with in-app purchases available.
Is Time Zone Converter・Convertime free?
Time Zone Converter・Convertime is free to download, with no in-app purchases.
Which has better reviews, World Cal or Time Zone Converter・Convertime?
Time Zone Converter・Convertime is rated higher. World Cal averages 4.9 out of 5 from 315 ratings, while Time Zone Converter・Convertime averages 5.0 from 4 ratings.
Do World Cal or Time Zone Converter・Convertime have ads?
World Cal shows ads; Time Zone Converter・Convertime does not.
Which is updated more often, World Cal or Time Zone Converter・Convertime?
World Cal ships an update every 4 months, and Time Zone Converter・Convertime every 2 months. Most recently, World Cal was updated on November 6, 2026 and Time Zone Converter・Convertime on November 8, 2026.

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