# Onetime. vs Clock

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.

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.

## The numbers

| Metric | Onetime. | Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (39 ratings)](https://appshunter.io/ios/app/onetime/id921569664/reviews)** | [2.5 (20K ratings)](https://appshunter.io/ios/app/clock/id1584215688/reviews) |
| Number of ratings | 39 | **20K** |
| Positive reviews | **51.5% of reviews** | 14.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 9 months** |
| Monetization | Free | Free |
| Size | 2 MB | 5 MB |
| Requires iOS | 13.0 | **10.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [FLUID Design GmbH](https://appshunter.io/developer/921569663) | [Apple](https://appshunter.io/developer/284417353) |

## What reviewers say

### Onetime.

[App page](https://appshunter.io/ios/app/onetime/id921569664)

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:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- ✨ Beautiful and elegant design
- 👍 Intuitive and easy to use interface
- 🌍 Great for visualizing time differences
- 💡 Unique and innovative visualization
- ✅ Works well for scheduling

**What reviewers complain about**

- 🐛 Data quality issues (incorrect times)
- 🐛 Inability to add cities
- 🐛 App crashes or freezes
- 🐛 City search not working
- 🐛 Some cities not recognized

**Reported bugs**

- 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

**Requested features**

- 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


### Clock

[App page](https://appshunter.io/ios/app/clock/id1584215688)

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:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Useful app
- 👍 Good alarm clock
- ✨ Interesting experience
- 🕰️ Helpful for timekeeping

**What reviewers complain about**

- 🐛 Alarm issues
- 🔇 Quiet/silent alarms
- 🕰️ Lack of customization
- 🤯 Frustrating bugs
- 🕰️ Unreliable timer

**Reported bugs**

- 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**

- 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


## Frequently asked questions

### Is Onetime. free?

Onetime. is free to download, with no in-app purchases.

### Is Clock free?

Clock is free to download, with no in-app purchases.

### Which has better reviews, Onetime. or Clock?

Onetime. is rated higher. Onetime. averages 3.5 out of 5 from 39 ratings, while Clock averages 2.5 from 20K ratings.

### Do Onetime. or Clock have ads?

Neither Onetime. nor Clock shows ads.

### Which is updated more often, Onetime. or Clock?

Onetime. ships an update every 11 months, and Clock every 9 months. Most recently, Onetime. was updated on September 17, 2026 and Clock on September 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*