Onetime. vs Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
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.
- World Clock for global time zones
- Customizable Alarms with music
- Stopwatch with lap recording
- Multiple Timers with labels
- Sleep schedule integration
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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.
Screenshots
Verdict
The clearest difference is rating: Onetime. at 3.5 against Clock's 2.5. Onetime. also leads on review sentiment (51% vs 14%). Clock's advantage is ratings volume (20K vs 39) and iOS requirement (10.0 vs 13.0). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Onetime. holds the better App Store score, 3.5 against 2.5. That said, the two scores are not equally well evidenced: Clock has 20K ratings behind it against 39, so its average is the more settled of the two. Written reviews point the same way: 51% of Onetime.'s written reviews are positive against 14% of Clock's.
Onetime. ships an update every 11 months, Clock every 9 months. The most recent releases landed on September 17, 2026 and September 25, 2026 respectively.
| Parameter | Onetime. | Clock |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (39 ratings) — better | 2.5 (20K ratings) |
| Positive reviews | 51.5% of reviews — better | 14.3% of reviews |
| Number of ratings | 39 | 20K — better |
| Update frequency | Every 11 months | Every 9 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | FLUID Design GmbH | Apple |
Customer experience
Onetime.
Clock
User reviews
Onetime.
From 39 App Store ratingsWhat we love
- ✨ Beautiful and elegant design
- 👍 Intuitive and easy to use interface
- 🌍 Great for visualizing time differences
- 💡 Unique and innovative visualization
- ✅ Works well for scheduling
Room to improve
- 🐛 Data quality issues (incorrect times)
- 🐛 Inability to add cities
- 🐛 App crashes or freezes
- 🐛 City search not working
- 🐛 Some cities not recognized
Clock
From 20K App Store ratingsWhat 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
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
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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
Show 4 moreShow fewer
- iPad version
- Tutorial on first launch
- Option to reverse view horizontally
- Ability to search future dates
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 moreShow fewer
- Display seconds in digital clock view
In-app purchases
Onetime.
No in-app purchases
Clock
No in-app purchases









