Comparison

Onetime. vs Clockwise

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

Clockwise

Easily track time zones for friends, family, and colleagues worldwide. Features dynamic backgrounds, personalized photos, and home-screen widgets for at-a-glance updates. Supports over 200k locations, even offline, and syncs across devices via iCloud.

Highlights
  • Automatic time zone detection
  • Time scrubbing for planning
  • Dynamic sky backgrounds
  • Personalized contact photos
  • Home-screen widgets
  • Daylight Saving Time alerts
  • Offline location database
Read full description

Tired of calculating time zone differences? Meet Clockwise, the ultimate app for tracking the time of friends, family, and colleagues around the world! • Simple Setup Just enter someone’s name (or select from your contacts), choose their location, and we’ll automatically detect their time zone! • Time Scrubbing Easily shift the time forwards or backwards to plan and coordinate across time zones. • Dynamic Sky Backgrounds Watch the sky come to life with beautiful colors that change in real-time, reflecting the actual sunrise and sunset of each person’s location. • Personalized Photos Add a personal touch by uploading photos of your loved ones. You can scale and crop images to get the perfect fit! • Widgets Stay connected at a glance with home-screen widgets that display the local time of your friends and family without even opening the app! • Daylight Saving Time Never miss a time change again! Stay informed of upcoming daylight saving time changes around the world. • Contact Linking Import your contacts and call or text them directly from the app. Getting in touch with your friends and family abroad has never been easier! • Clock Customization Select from a variety of clock display options, including both analog and 24-hour formats. • Extensive Location Database Choose from over 200k locations worldwide, even offline. Whether it’s a big city or a small town, we’ve got you covered. • iCloud Sync Sync your contacts and their time zones across all your devices via iCloud. Clockwise is available on both iPhone and iPad.

Screenshots

Onetime.4 screens
Clockwise4 screens

Verdict

The call

The clearest difference is rating: Clockwise at 4.6 against Onetime.'s 3.5. Clockwise also leads on review sentiment (93% vs 51%) and update cadence (every 6 weeks vs every 11 months). Onetime.'s advantage is ratings volume (39 vs 8) and iOS requirement (13.0 vs 16.1). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Clockwise holds the better App Store score, 4.6 against 3.5. Both are backed by a comparable volume of ratings — 39 and 8 respectively. Written reviews point the same way: 51% of Onetime.'s written reviews are positive against 93% of Clockwise's.

UpkeepUpdate frequency

Onetime. ships an update every 11 months, Clockwise every 6 weeks. The most recent releases landed on September 30, 2026 and October 8, 2026 respectively.

Scorecard5 real differences · 5 level
Onetime. versus Clockwise: the parameters behind the verdict, then further details
ParameterOnetime.Clockwise
PriceFreeFree
Rating3.5 (39 ratings)4.6 (8 ratings) — better
Positive reviews51.5% of reviews92.9% of reviews — better
Number of ratings39 — better8
Update frequencyEvery 11 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 — better16.1
Further details — not scored
Size2 MB35 MB
Age rating4+4+
DeveloperFLUID Design GmbHBrittany Petrova

Customer experience

Onetime.

All ratings39 ratings
Positive59.0%
Neutral2.6%
Negative38.5%
Written reviews134 reviews
Positive51.5%
Neutral5.2%
Negative43.3%

Clockwise

All ratings8 ratings
Positive87.5%
Neutral0.0%
Negative12.5%
Written reviews14 reviews
Positive92.9%
Neutral0.0%
Negative7.1%

Bugs and 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
Show 3 more
  • 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
Show 4 more
  • iPad version
  • Tutorial on first launch
  • Option to reverse view horizontally
  • Ability to search future dates

Clockwise

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Onetime.

No in-app purchases

None

Clockwise

No in-app purchases

Questions

Is Onetime. free?
Onetime. is free to download, with no in-app purchases.
Is Clockwise free?
Clockwise is free to download, with no in-app purchases.
Which has better reviews, Onetime. or Clockwise?
Clockwise is rated higher. Onetime. averages 3.5 out of 5 from 39 ratings, while Clockwise averages 4.6 from 8 ratings.
Do Onetime. or Clockwise have ads?
Neither Onetime. nor Clockwise shows ads.
Which is updated more often, Onetime. or Clockwise?
Onetime. ships an update every 11 months, and Clockwise every 6 weeks. Most recently, Onetime. was updated on September 30, 2026 and Clockwise on October 8, 2026.

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