# Tempus World Clock vs Unichrono

The clearest difference is price: Unichrono at Free against Tempus World Clock's $1.99. Tempus World Clock's advantage is in-app purchases (none vs 1). On update cadence, ads, device support and iOS requirement there is nothing between them.

Unichrono is free to download; Tempus World Clock costs $1.99 up front. Unichrono sells 1 one-off in-app purchase. Tempus World Clock asks for nothing beyond the download.

Tempus World Clock ships an update every 10 days, Unichrono every 5 days. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Tempus World Clock | Unichrono |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tempus-world-clock/id6757654219/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 5 days** |
| Monetization | Paid | — |
| Size | 61 MB | 34 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad, Apple Watch | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Viktor Gamov](https://appshunter.io/developer/1868107656) | [Abhilash Emmanuel](https://appshunter.io/developer/6802869223) |

## What reviewers say

### Tempus World Clock

[App page](https://appshunter.io/ios/app/tempus-world-clock/id6757654219)

Easily track multiple time zones with customizable clocks for people and places. Convert times instantly, find optimal meeting slots across different regions, and view city details including weather and sunrise/sunset.

**Highlights:** Customizable clocks with names and colors, Instant time conversion across zones, Meeting time finder with working hours, City detail view with weather and sunrise/sunset, Apple Watch app and complications, Home Screen widgets, iCloud sync across devices

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Unichrono

[App page](https://appshunter.io/ios/app/unichrono/id6804218446)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unichrono: World Clock Widget | $2.99 | one-time |


## Frequently asked questions

### Is Tempus World Clock free?

Tempus World Clock costs $1.99, with no in-app purchases.

### Is Unichrono free?

Unichrono is free to download, with in-app purchases available.

### Do Tempus World Clock or Unichrono have ads?

Neither Tempus World Clock nor Unichrono shows ads.

### Which is updated more often, Tempus World Clock or Unichrono?

Tempus World Clock ships an update every 10 days, and Unichrono every 5 days. Most recently, Tempus World Clock was updated on October 28, 2026 and Unichrono on October 29, 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.*