World Clock vs World Time Clock Master
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
World Clock
Easily calculate time differences worldwide by scrolling a dynamic time bar. Add any city, set specific dates and times, and plan international meetings or calls effortlessly. The app syncs with iOS time data.
- Dynamic time bar for instant difference calculation
- Add and manage multiple cities
- Direct date and time specification
- Customizable city names
- Syncs with iOS time data
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"World Clock" is the best app to calculate time differences all over the world. All cities' times change automatically just by scrolling it with your finger. Therefore, you don't need to add or subtract times any more to calculate time differences. ■■Features■■ -Scrolling the time bar on the side of the screen up and down simultaneously changes the time in each city to the future or past. -Double-tap the time bar to change the time unit between 1 minute and 1 hour. -You can add any city from the list of cities provided in the app. -Tap each city to specify the date and time directly. -Press and hold on a city to change the city and edit the custom name. -Only one fixed city can be displayed at the top of the screen. ■■Examples of use■■ -International meeting planner -International call -Trip planning Disclaimer:This application has been built with extreme care and attention. However, it does not guarantee the accuracy of the names and times of the cities displayed. Please note that we are not liable whatsoever for any profit loss, or any other form of loss experienced by the customer from using this application. ※We don't have any time difference data in our app. We have been inquiring about time differences of each city to iOS. Therefore, “World Clock” shows you the time of iOS. As a result, depending on the version of iOS you are using, the exact time may not be displayed. If you find a time lag in our app, please confirm default "Clock" app on your iPhone. If the time in "Clock" app is the same with the time in our “World Clock”, it means that our app is running normally. ※Abbreviated name of time zone was originally researched and added. If you notice any mistakes, please contact us from the support site. ※The screenshots are specially edited not to show ads.
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.
- 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
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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
Verdict
The clearest difference is rating: World Time Clock Master at 4.6 against World Clock's 3.9. World Time Clock Master also leads on ads (none vs shown) and ratings volume (816 vs 14). World Clock's advantage is monetization model (ad-supported vs subscription) and review sentiment (77% vs 66%). On price, in-app purchases 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
Both are free to download. World Clock sells 1 one-off in-app purchase and World Time Clock Master sells 10 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
World Time Clock Master holds the better App Store score, 4.6 against 3.9. That said, the two scores are not equally well evidenced: World Time Clock Master has 816 ratings behind it against 14, so its average is the more settled of the two. Written reviews complicate that: 77% of World Clock's written reviews are positive against 66% of World Time Clock Master's, so the app with the better star average is not the one people write more warmly about.
World Clock ships an update every 6 weeks, World Time Clock Master fortnightly. The most recent releases landed on June 9, 2026 and September 25, 2026 respectively.
| Parameter | World Clock | World Time Clock Master |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (14 ratings) | 4.6 (816 ratings) — better |
| Positive reviews | 77.4% of reviews — better | 65.8% of reviews |
| Number of ratings | 14 | 816 — better |
| Update frequency | Every 6 weeks | Fortnightly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Ad-supported — better | Subscription |
| Devices | iPhone, iPod | iPhone, iPad, Vision Pro — better |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 6 MB | 236 MB |
| Age rating | 4+ | 4+ |
| Developer | Yuki Fukui | Alex Komarov Inc. |
Customer experience
World Clock
World Time Clock Master
Bugs and requests
World Clock
Not enough reviews yet to summarise bugs or 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
In-app purchases
World Clock
- Remove Advertisement$1.99
World Time Clock Master
- 1 month3 variants$2.991 Month
- 3 months$3.993 Months
- 1 year1 Year trial2 variants$11.991 Year
Show 3 moreShow fewer
- 1 year3 Days trial$11.991 Year
- 1 year$11.991 Year
- 1 year3 Days trial$19.991 Year
- Lifetime$29.99
- Lifetime$49.99
- Lifetime$79.99
Show 1 moreShow fewer
- Lifetime$99.99
Questions
Is World Clock free?
Is World Time Clock Master free?
Which has better reviews, World Clock or World Time Clock Master?
Do World Clock or World Time Clock Master have ads?
Which is updated more often, World Clock or World Time Clock Master?
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