Comparison

World Time Clock Master vs What Is The Time

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

Head to head
About

World Time Clock Master

Effortlessly manage multiple time zones with this app. Convert times instantly, schedule events, and view global clocks at a glance with interactive widgets. Features atomic accuracy and a vast database of locations.

Highlights
  • Multiple time zone display
  • Interactive time conversion
  • Event scheduling
  • Atomic time accuracy
  • Dynamic home screen widgets
  • List mode for text view
  • Real moon phases and sunrise/sunset
Features
Read full description

THE EASIEST WAY TO DEAL WITH MULTIPLE TIMEZONES + INTERACTIVE WIDGETS Sick of screwing up meeting times and missing calls? This app cuts through time-zone confusion and hands you the perfect hour at a glance. Forget guesswork — just click, connect, and impress. KEY FEATURES EVENT SCHEDULING MADE EASY Found the perfect meeting time? Add events to your calendar with just a tap, and never miss an international webinar, call, or special moment again. ATOMIC ACCURACY No drift, no guesswork. Each second syncs with the atomic standard, so you can trust every moment. Extensive Time Zone Database: Tap into over 160,000 locations and time zones including GMT, UTC, and more. UNIFIED CLOCK FACE View all your essential time zones at a glance on one beautifully designed, customizable clock face. Whether you prefer digital or analog displays (or even military time), everything is exactly where you need it. INTERACTIVE TIME CONVERSION Convert times instantly by simply twisting or swiping across the clock face. Watch as your selected time zones update in real time—making planning international calls, meetings, or travel effortless. DYNAMIC WIDGETS Access global times without even opening the app. Our interactive home screen widget lets you drag a simple line to reveal and convert times, ensuring you’re always in sync no matter where you are. LIST MODE Get a clean, text-based view of all your cities in one column. See times and dates at a glance, and scroll to check future or past hours. It’s a no-fuss way to track the world’s clocks. FEELS LIKE A LUXURY TIMEPIECE We poured effort into details most people never notice — and we’re okay with that. Our users aren’t “most people.” Details include: — Real Moon Phases — Real Moon Rotation — Real Sunrise & Sunset — Advanced City Lights — Haptic Feedback * * * World Clock Master offers a premium subscription: Subscribe to get access to unlimited timezones, interactive widgets, customizations, and timely automatic updates of our timezone database of more than 160,000 locations and timezones. – Length of subscription: 1 month or 1 year – Payment will be charged to iTunes Account at confirmation of purchase – Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period – Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal – Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase – Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable – Terms & Conditions: https://timemaster.s3.amazonaws.com/Time-master-terms.pdf

About

What Is The Time

This utility app simplifies timezone calculations with an intuitive time ruler. Swipe to adjust time and see world clocks update instantly, aiding in meeting planning. Personalize city names and sorting for a customized experience.

Highlights
  • Gesture-based time ruler
  • Real-time city clock updates
  • Personalized city names
  • Customizable city sorting
  • Day/night color transitions
Features
Read full description

There are many timezone and world clock apps out there. However, they simply display the current time in various cities. If you wish to find out the time in Paris at 5pm local time, you would need to make mental calculations. "What is the Time" is the app that simplifies this process with just a swipe on the time ruler. Easily move time forwards or backwards and observe the city clocks update in real time. This feature facilitates planning for future meetings. You can personalize the city names with those of your loved ones, team members, or special memories. Sort the cities alphabetically or chronologically, or rearrange them manually in your desired order. The color of the city changes during the transition from day to night. No subscriptions or ads involved, just a one-time in-app purchase to access more than 3 cities.

Screenshots

World Time Clock Master4 screens
What Is The Time4 screens

Verdict

The call

The clearest difference is monetization model: What Is The Time at free with in-app purchases against World Time Clock Master's subscription. What Is The Time also leads on review sentiment (100% vs 67%) and rating (5.0 vs 4.6). World Time Clock Master's advantage is ratings volume (839 vs 2). On price, update cadence, ads and in-app purchases 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 Time Clock Master sells 10 in-app purchases, starting at $2.99 per month and What Is The Time sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

What Is The Time holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: World Time Clock Master has 839 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 67% of World Time Clock Master's written reviews are positive against 100% of What Is The Time's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
World Time Clock Master versus What Is The Time: the parameters behind the verdict, then further details
ParameterWorld Time Clock MasterWhat Is The Time
PriceFreeFree
Rating4.6 (839 ratings)5.0 (2 ratings) — better
Positive reviews66.7% of reviews100.0% of reviews — better
Number of ratings839 — better2
Update frequencyFortnightlyFortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhone, iPad, Vision Pro — betteriPhone, iPad
Requires iOS17.017
Further details — not scored
Size236 MB93 MB
Age rating4+4+
DeveloperAlex Komarov Inc.Fong Yee Long

Customer experience

World Time Clock Master

All ratings839 ratings
Positive90.9%
Neutral2.5%
Negative6.6%
Written reviews78 reviews
Positive66.7%
Neutral5.1%
Negative28.2%

What Is The Time

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

World Time Clock Master

Reported bugs

4 issues
  • Lose all the registered locations after updating the app
  • Sticky signup interface
  • Widget doesn't work
  • GMT and London currently have a 1 hour time difference between the two locations, but the app shows them the same time

Requested features

4 requests
  • Add the time difference in hours between the default location and other locations in both the widget and the app
  • See my calendar events on the dial
  • Make a paid tier that doesn't collect my data
  • Add new event to a Calendar

What Is The Time

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

World Time Clock Master

Subscriptions6
  • 1 month3 variants$2.991 Month
  • 3 months$3.993 Months
  • 1 year1 Year trial2 variants$11.991 Year
Show 3 more
  • 1 year3 Days trial$11.991 Year
  • 1 year$11.991 Year
  • 1 year3 Days trial$19.991 Year
One-time4
  • Lifetime$29.99
  • Lifetime$49.99
  • Lifetime$79.99
Show 1 more
  • Lifetime$99.99
2 purchases

What Is The Time

One-time2
  • Unlock Cities$1.99
  • Tip Jar$1.99

Questions

Is World Time Clock Master free?
World Time Clock Master is free to download, with in-app purchases available.
Is What Is The Time free?
What Is The Time is free to download, with in-app purchases available.
Which has better reviews, World Time Clock Master or What Is The Time?
What Is The Time is rated higher. World Time Clock Master averages 4.6 out of 5 from 839 ratings, while What Is The Time averages 5.0 from 2 ratings.
Do World Time Clock Master or What Is The Time have ads?
Neither World Time Clock Master nor What Is The Time shows ads.
Which is updated more often, World Time Clock Master or What Is The Time?
World Time Clock Master ships an update fortnightly, and What Is The Time fortnightly. Most recently, World Time Clock Master was updated on October 27, 2026 and What Is The Time on October 24, 2026.

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