# Onetime. vs UNIMATIC World Clock

The clearest difference is rating: UNIMATIC World Clock at 4.6 against Onetime.'s 3.3. UNIMATIC World Clock also leads on review sentiment (80% vs 51%) and update cadence (every 2 months vs every 11 months). On price, ratings volume, 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.

UNIMATIC World Clock holds the better App Store score, 4.6 against 3.3. Both are backed by a comparable volume of ratings — 42 and 53 respectively. Written reviews point the same way: 51% of Onetime.'s written reviews are positive against 80% of UNIMATIC World Clock's.

Onetime. ships an update every 11 months, UNIMATIC World Clock every 2 months. The most recent releases landed on October 20, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Onetime. | UNIMATIC World Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (42 ratings)](https://appshunter.io/ios/app/onetime/id921569664/reviews) | **[4.6 (53 ratings)](https://appshunter.io/ios/app/unimatic-world-clock/id6651829973/reviews)** |
| Number of ratings | 42 | **53** |
| Positive reviews | 51.5% of reviews | **80.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 2 MB | 43 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FLUID Design GmbH](https://appshunter.io/developer/921569663) | [Alex Komarov Inc.](https://appshunter.io/developer/364741805) |

## 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


### UNIMATIC World Clock

[App page](https://appshunter.io/ios/app/unimatic-world-clock/id6651829973)

Easily view and convert time zones for cities worldwide. Coordinate meetings, schedule events, and share times instantly with friends and family across the globe. Access over 160,000 cities and major time zones.

**Highlights:** Global time access, Easy time conversion, Calendar event integration, Instant time sharing, Extensive city database

**In-app purchases:** none


## Frequently asked questions

### Is Onetime. free?

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

### Is UNIMATIC World Clock free?

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

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

UNIMATIC World Clock is rated higher. Onetime. averages 3.3 out of 5 from 42 ratings, while UNIMATIC World Clock averages 4.6 from 53 ratings.

### Do Onetime. or UNIMATIC World Clock have ads?

Neither Onetime. nor UNIMATIC World Clock shows ads.

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

Onetime. ships an update every 11 months, and UNIMATIC World Clock every 2 months. Most recently, Onetime. was updated on October 20, 2026 and UNIMATIC World Clock on September 22, 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.*