World Clock Time Zones Pro vs Onetime.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
World Clock Time Zones Pro
This intuitive world clock helps you coordinate with people across different time zones. Easily plan meetings, stay connected with loved ones, and manage global teams. It offers a unique visual display and time shifting capabilities for effortless time management.
- Unique intuitive display
- Time shifting for time changes
- Meeting scheduling
- Global team management
- Travel time forecasting
- Event reminders and notifications
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Coordinate with anyone, any time, anywhere, around the world with this unique and intuitive world clock. SYNC TEAMS - schedule overlap feature makes it easy to see when everyone's schedule coincides. KEEP IN TOUCH - Stay connected to family around the globe - know when it's the best time to call your relatives in another time zone. GREAT FOR TRAVEL - Plan your travel - use it to forecast your landing time after a long flight thru multiple time zones. GLOBAL SPORTS MATCHES - Don't miss the opening kick-off of the match in Manchester. TRADING MARKETS - Stay on top of the financial markets around the world. Features • Unique Intuitive Display - Super easy to see the times around the world • Time Shifting: Rotate the clock forwards or backwards to see time changes. • Large Widget - see the full clock face right on your home screen. • Schedule Overlap - see hours of overlap for schedules in one or more locations. • Reminders: Creates notifications for any time, any place.
Onetime.
Visualize multiple world time zones on a single, intuitive dial. This app simplifies international scheduling and communication by displaying cities as they move through day and night, automatically handling daylight saving changes. Effortlessly find the perfect time for calls or to connect with loved ones globally.
- Single, easy-to-read time zone dial
- Visualizes cities moving through day and night
- Automatic daylight saving time adjustments
- Timetravel™ feature for scheduling
- Shareable time invites
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One world. Onetime. Finally, a world clock that integrates all time zones into one easy-to-read dial. We are all living and working globally more and more, so we needed a way to simply see the time in cities around the world at a glance. That’s how Onetime was born. Built on the metaphor of the earth’s rotation, Onetime displays all the cities that matter to you as they move through the day and night in a natural, clockwise direction referencing the international date line. Whether you are scheduling an international call or checking to see what time it is back home, Onetime is the clock for you. No more mistakes adding and subtracting hours, no more confusing GMT numbers, no more remembering daylight savings calendars. Onetime takes care of it all, automatically. And with Timetravel™, you can fly through time so that you quickly find the right moment to schedule that important teleconference with your international colleagues or catch your loved ones before their bedtimes. The „Share“ feature lets you choose a date with TimeTravel and send an invite via message or email. Give up your wall of newsroom clocks and switch to Onetime today. Onetime. By FLUID. ABOUT FLUID Onetime was created by the award-winning design firm FLUID. With our locations in Munich and Silicon Valley and our international client base, the FLUID team is a heavy Onetime user, too.
Screenshots
Verdict
The clearest difference is price: Onetime. at Free against World Clock Time Zones Pro's $3.99. Onetime. also leads on iOS requirement (13.0 vs 18.0). World Clock Time Zones Pro's advantage is review sentiment (94% vs 51%) and rating (4.7 vs 3.5). On ads, in-app purchases, monetization model 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
Onetime. is free to download; World Clock Time Zones Pro costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
World Clock Time Zones Pro holds the better App Store score, 4.7 against 3.5. Both are backed by a comparable volume of ratings — 151 and 39 respectively. Written reviews point the same way: 94% of World Clock Time Zones Pro's written reviews are positive against 51% of Onetime.'s.
World Clock Time Zones Pro ships an update every 3 weeks, Onetime. every 11 months. The most recent releases landed on September 19, 2026 and September 17, 2026 respectively.
| Parameter | World Clock Time Zones Pro | Onetime. |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 4.7 (151 ratings) — better | 3.5 (39 ratings) |
| Positive reviews | 94.1% of reviews — better | 51.5% of reviews |
| Number of ratings | 151 — better | 39 |
| Update frequency | Every 3 weeks — better | Every 11 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 18.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 19 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | David Richmond | FLUID Design GmbH |
Customer experience
World Clock Time Zones Pro
Onetime.
Bugs and requests
World Clock Time Zones Pro
Not enough reviews yet to summarise bugs or requests.
Onetime.
Reported bugs
8 issues- Incorrect time zone data for some cities (e.g., Taipei, São Paulo)
- App freezes when trying to add cities
- City search function not working ('No cities found')
- App crashes on launch after updates
- Time travel feature stops working with certain cities
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- Scrolling back and forth in time no longer possible
- App not working with latest iOS versions
- Default 'My Time' zone cannot be removed
Requested features
9 requests- Ability to add descriptive labels for cities
- Ability to add GMT/UTC time
- Ability to add time zones manually
- Homescreen widgets
- Ability to toggle cities instead of removing
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- iPad version
- Tutorial on first launch
- Option to reverse view horizontally
- Ability to search future dates
In-app purchases
World Clock Time Zones Pro
No in-app purchases
Onetime.
No in-app purchases
Questions
Is World Clock Time Zones Pro free?
Is Onetime. free?
Which has better reviews, World Clock Time Zones Pro or Onetime.?
Do World Clock Time Zones Pro or Onetime. have ads?
Which is updated more often, World Clock Time Zones Pro or Onetime.?
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