# Dozen Clock vs Zulu Time

The clearest difference is price: Zulu Time at Free against Dozen Clock's $1.99. Dozen Clock's advantage is in-app purchases (none vs 1) and device support (5 vs 3). On update cadence and ads there is nothing between them.

Zulu Time is free to download; Dozen Clock costs $1.99 up front. Zulu Time sells 1 in-app purchase, starting at $1.99 per month. Dozen Clock asks for nothing beyond the download.

Dozen Clock ships an update every 2 days, Zulu Time every 4 days. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Dozen Clock | Zulu Time |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 4 days |
| Size | 2 MB | 15 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac, Apple Watch** | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Gergo Blasko](https://appshunter.io/developer/1767828070) | [Yigit Can Akinci](https://appshunter.io/developer/1455217918) |

## What reviewers say

### Dozen Clock

[App page](https://appshunter.io/ios/app/dozen-clock/id6733246889)

**Features:** Apple Watch app

**In-app purchases:** none


### Zulu Time

[App page](https://appshunter.io/ios/app/zulu-time-pilot-utc-clock/id6806399579)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zulu Time Pro | $1.99 | per month |


## Frequently asked questions

### Is Dozen Clock free?

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

### Is Zulu Time free?

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

### Do Dozen Clock or Zulu Time have ads?

Neither Dozen Clock nor Zulu Time shows ads.

### Which is updated more often, Dozen Clock or Zulu Time?

Dozen Clock ships an update every 2 days, and Zulu Time every 4 days. Most recently, Dozen Clock was updated on October 27, 2026 and Zulu Time on October 31, 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.*