Comparison

Zen World Time Converter vs Clock

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

Head to head
About

Zen World Time Converter

Easily find the current time in any location worldwide. This app simplifies scheduling calls across different time zones with an intuitive slider for quick time adjustments. It offers extensive location data and clear visual differentiation of day and night hours.

Highlights
  • Global time zone conversion
  • Over 22,000 locations
  • Customizable daylight hours
  • Intuitive time slider
  • Clear day/night differentiation
  • Ad-free experience
Features
Read full description

Zen World Time makes finding times in any location around the globe fast and easy. Figuring out the best time to call someone in a different time zone has never been easier—just drag our unique slider. Features • Over 22,000 locations available worldwide • Customizable daylight hours for each location • Elegant and intuitive interface • Nighttime and daytime hours are clearly differentiated • Time slider lets you advance to future times quickly • Ad-free • In-app purchase gives you access to all features Try it today!

About

Clock

This app helps you manage your time across devices. It offers features like a world clock for global time zones, customizable alarms with music options, a stopwatch for measuring durations, and timers for countdowns.

Highlights
  • World Clock for global time zones
  • Customizable Alarms with music
  • Stopwatch with lap recording
  • Multiple Timers with labels
  • Sleep schedule integration
Features
Read full description

Clock helps you manage your time on iOS, iPadOS and macOS. Check the current time anywhere with World Clock, make sure you wake up on time with Alarms, or keep track of passing time with Stopwatch and Timers. World Clock Check the current time in cities around the world. Or quickly see the time difference compared to your local time to make coordinating across time zones easy. Alarms Set regular alarms for any time of day. Choose to set them to repeat on specific days, give them a label and select the sound that plays with each. When your alarm goes off, you can choose to play from a selection of sounds, or pick a song from your Apple Music library. You can also adjust your wake up alarm and sleep schedule from Health right in the Clock app so you can wind down with a Sleep Focus and make sure you always wake up on time. Stopwatch Measure the duration of an event. You can see how much time has lapsed with either a digital or analog stopwatch face, and you can quickly record laps or splits throughout the time. Timers Count down seconds, minutes or hours. Or count down using multiple timers, and add labels and distinct sounds to each. You can also choose to set a timer that stops any music playing in the background—perfect for getting to sleep with your favorite playlist.

Screenshots

Zen World Time Converter4 screens
Clock3 screens

Verdict

The call

The clearest difference is review sentiment: Zen World Time Converter at 88% against Clock's 14%. Zen World Time Converter also leads on rating (4.6 vs 2.5) and update cadence (every 2 months vs every 6 months). Clock's advantage is in-app purchases (none vs 1) and ratings volume (20K vs 189). On price, ads, device support 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. Zen World Time Converter sells 1 one-off in-app purchase. Clock asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Zen World Time Converter holds the better App Store score, 4.6 against 2.5. That said, the two scores are not equally well evidenced: Clock has 20K ratings behind it against 189, so its average is the more settled of the two. Written reviews point the same way: 88% of Zen World Time Converter's written reviews are positive against 14% of Clock's.

UpkeepUpdate frequency

Zen World Time Converter ships an update every 2 months, Clock every 6 months. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

Scorecard6 real differences · 4 level
Zen World Time Converter versus Clock: the parameters behind the verdict, then further details
ParameterZen World Time ConverterClock
PriceFreeFree
Rating4.6 (189 ratings) — better2.5 (20K ratings)
Positive reviews88.2% of reviews — better14.2% of reviews
Number of ratings18920K — better
Update frequencyEvery 2 months — betterEvery 6 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS10.010.0
Further details — not scored
Size18 MB5 MB
Age rating4+4+
DeveloperVlad ParaschivApple Inc.

Customer experience

Zen World Time Converter

All ratings188 ratings
Positive88.8%
Neutral4.8%
Negative6.4%
Written reviews136 reviews
Positive88.2%
Neutral4.4%
Negative7.4%

Clock

All ratings19,995 ratings
Positive32.9%
Neutral6.8%
Negative60.2%
Written reviews4,412 reviews
Positive14.2%
Neutral8.6%
Negative77.2%

User reviews

Zen World Time Converter

From 189 App Store ratings

What we love

  • 👍 Simple and intuitive user interface
  • 🎨 Clean, elegant, and visually appealing design
  • ⚡ Easy to use for quick time zone comparisons
  • 🌍 Supports multiple cities simultaneously
  • 🔄 Smooth slider functionality for time adjustments

Room to improve

  • 🐛 Incorrect time zone data for some locations
  • 📱 Not optimized for iPad (iPhone-only formatting)
  • 🔒 Limited free version (only 2 cities)
  • 📊 Limited time range (only 7 days ahead)
  • 🎚️ Excessive scrolling needed to view all cities

Clock

From 20K App Store ratings

What we love

  • 🚀 Useful app
  • 👍 Good alarm clock
  • ✨ Interesting experience
  • 🕰️ Helpful for timekeeping

Room to improve

  • 🐛 Alarm issues
  • 🔇 Quiet/silent alarms
  • 🕰️ Lack of customization
  • 🤯 Frustrating bugs
  • 🕰️ Unreliable timer

Bugs and requests

Zen World Time Converter

Reported bugs

8 issues
  • Time doesn't auto-update after app launch
  • Red button to snap back to current time shows outdated time
  • Incorrect time zone placement (St. Barthélemy in French Alps instead of Caribbean)
  • Calendar functionality not working as expected
  • Sunrise/sunset can only be set in 30-minute increments
Show 3 more
  • Daylight saving time not captured correctly in some regions
  • Hijri calendar mode cannot be changed to Gregorian
  • Cannot select specific dates manually

Requested features

16 requests
  • 24-hour time format option
  • Ability to rearrange cities by drag-and-drop
  • Alphabetical or custom sorting of city list
  • Customizable font colors per city
  • Custom city names (e.g., 'Grandma', 'Corporate')
Show 11 more
  • Minute-level time interval adjustments (15-min, 1-min increments)
  • Quick date selection for future dates
  • Automatic sunrise/sunset time updates based on location
  • UTC time zone display
  • Compact view option to fit more cities on screen
  • Widget functionality for home screen
  • Outlook calendar integration
  • Ability to view previous days
  • Add missing cities and locations
  • Move app settings from iPhone settings into app
  • Zoom in/out functionality

Clock

Reported bugs

3 issues
  • Alarms not going off or being silent
  • Alarms disappearing or turning off on their own
  • Timer issues like not showing countdown or not working properly

Requested features

6 requests
  • Ability to set alarms for specific dates
  • Option to silence all alarms for a period
  • More customization for alarm sounds and snooze
  • Separate volume control for alarms
  • Ability to group and manage alarms
Show 1 more
  • Display seconds in digital clock view

In-app purchases

1 purchases

Zen World Time Converter

One-time1
  • Zen World Time Pro Features$5.99
None

Clock

No in-app purchases

Questions

Is Zen World Time Converter free?
Zen World Time Converter is free to download, with in-app purchases available.
Is Clock free?
Clock is free to download, with no in-app purchases.
Which has better reviews, Zen World Time Converter or Clock?
Zen World Time Converter is rated higher. Zen World Time Converter averages 4.6 out of 5 from 189 ratings, while Clock averages 2.5 from 20K ratings.
Do Zen World Time Converter or Clock have ads?
Neither Zen World Time Converter nor Clock shows ads.
Which is updated more often, Zen World Time Converter or Clock?
Zen World Time Converter ships an update every 2 months, and Clock every 6 months. Most recently, Zen World Time Converter was updated on October 25, 2026 and Clock on October 31, 2026.

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