# Onetime. vs EarthClock Time Zone Converter

The clearest difference is review sentiment: EarthClock Time Zone Converter at 100% against Onetime.'s 51%. EarthClock Time Zone Converter also leads on rating (4.3 vs 3.5) and update cadence (every 3 months vs every 11 months). Onetime.'s advantage is in-app purchases (none vs 1) and ratings volume (39 vs 6). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. EarthClock Time Zone Converter sells 1 in-app purchase, starting at $5.99 per year. Onetime. asks for nothing beyond the download.

EarthClock Time Zone Converter holds the better App Store score, 4.3 against 3.5. That said, the two scores are not equally well evidenced: Onetime. has 39 ratings behind it against 6, 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 100% of EarthClock Time Zone Converter's.

Onetime. ships an update every 11 months, EarthClock Time Zone Converter every 3 months. The most recent releases landed on September 17, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Onetime. | EarthClock Time Zone Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (39 ratings)](https://appshunter.io/ios/app/onetime/id921569664/reviews) | **[4.3 (6 ratings)](https://appshunter.io/ios/app/earthclock-time-zone-converter/id6503596287/reviews)** |
| Number of ratings | **39** | 6 |
| Positive reviews | 51.5% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 3 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 48 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) | [Sameer Rajadnya](https://appshunter.io/developer/1749220190) |

## 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


### EarthClock Time Zone Converter

[App page](https://appshunter.io/ios/app/earthclock-time-zone-converter/id6503596287)

Visually convert time zones with an interactive dial and slide list. Easily see day/night status, dates, and track time across multiple locations. Save events to your calendar or set reminders with a single tap.

**Highlights:** Visual, interactive time conversion display, Time travel tool for precise conversions, Set native iOS alarms and calendar events, Powerful search and custom city labels, Detailed time, date, and timezone information, Day/night visual cues

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EarthClock+ | $5.99 | per year |


## Frequently asked questions

### Is Onetime. free?

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

### Is EarthClock Time Zone Converter free?

EarthClock Time Zone Converter is free to download, with in-app purchases available.

### Which has better reviews, Onetime. or EarthClock Time Zone Converter?

EarthClock Time Zone Converter is rated higher. Onetime. averages 3.5 out of 5 from 39 ratings, while EarthClock Time Zone Converter averages 4.3 from 6 ratings.

### Do Onetime. or EarthClock Time Zone Converter have ads?

Neither Onetime. nor EarthClock Time Zone Converter shows ads.

### Which is updated more often, Onetime. or EarthClock Time Zone Converter?

Onetime. ships an update every 11 months, and EarthClock Time Zone Converter every 3 months. Most recently, Onetime. was updated on September 17, 2026 and EarthClock Time Zone Converter on September 18, 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.*