Comparison

Clock vs World Time Clock Master

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

Head to head
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.

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

Screenshots

Clock3 screens
World Time Clock Master4 screens

Verdict

The call

The clearest difference is review sentiment: World Time Clock Master at 66% against Clock's 14%. World Time Clock Master also leads on rating (4.6 vs 2.5) and update cadence (fortnightly vs every 9 months). Clock's advantage is in-app purchases (none vs 13) and ratings volume (20K vs 816). On price, ads and device support 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. Clock asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

World Time Clock Master 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 816, so its average is the more settled of the two. Written reviews point the same way: 14% of Clock's written reviews are positive against 66% of World Time Clock Master's.

UpkeepUpdate frequency

Clock ships an update every 9 months, World Time Clock Master fortnightly. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.

Scorecard7 real differences · 3 level
Clock versus World Time Clock Master: the parameters behind the verdict, then further details
ParameterClockWorld Time Clock Master
PriceFreeFree
Rating2.5 (20K ratings)4.6 (816 ratings) — better
Positive reviews14.3% of reviews65.8% of reviews — better
Number of ratings20K — better816
Update frequencyEvery 9 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
DevicesiPhone, iPad, iPodiPhone, iPad, Vision Pro
Requires iOS10.0 — better17.0
Further details — not scored
Size5 MB236 MB
Age rating4+4+
DeveloperAppleAlex Komarov Inc.

Customer experience

Clock

All ratings19,552 ratings
Positive33.0%
Neutral6.8%
Negative60.2%
Written reviews4,265 reviews
Positive14.3%
Neutral8.7%
Negative77.1%

World Time Clock Master

All ratings816 ratings
Positive90.8%
Neutral2.8%
Negative6.4%
Written reviews76 reviews
Positive65.8%
Neutral5.3%
Negative28.9%

User reviews

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

World Time Clock Master

From 816 App Store ratings

What we love

  • 🚀 Delightful scheduling assistance
  • 👍 Feature improvement
  • 👍 The best Timezone helper
  • 👍 One of the best clocks around
  • 👍 The Widget is so damn cool!

Room to improve

  • 🐛 Problemas al actualizar
  • 🐛 Sticky signup interface
  • 🐛 Demo not enough
  • 🔒 NOT A FREE APP
  • 💰 Terrible monetisation model compared to previous app

Bugs and requests

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

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

In-app purchases

None

Clock

No 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

Questions

Is Clock free?
Clock is free to download, with no in-app purchases.
Is World Time Clock Master free?
World Time Clock Master is free to download, with in-app purchases available.
Which has better reviews, Clock or World Time Clock Master?
World Time Clock Master is rated higher. Clock averages 2.5 out of 5 from 20K ratings, while World Time Clock Master averages 4.6 from 816 ratings.
Do Clock or World Time Clock Master have ads?
Neither Clock nor World Time Clock Master shows ads.
Which is updated more often, Clock or World Time Clock Master?
Clock ships an update every 9 months, and World Time Clock Master fortnightly. Most recently, Clock was updated on September 24, 2026 and World Time Clock Master on September 25, 2026.

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